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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.parquet.hadoop;
import static org.apache.parquet.format.Util.writeFileCryptoMetaData;
import static org.apache.parquet.format.Util.writeFileMetaData;
import static org.apache.parquet.format.converter.ParquetMetadataConverter.MAX_STATS_SIZE;
import static org.apache.parquet.hadoop.ParquetWriter.DEFAULT_BLOCK_SIZE;
import static org.apache.parquet.hadoop.ParquetWriter.MAX_PADDING_SIZE_DEFAULT;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.zip.CRC32;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.parquet.Preconditions;
import org.apache.parquet.Version;
import org.apache.parquet.bytes.BytesInput;
import org.apache.parquet.bytes.BytesUtils;
import org.apache.parquet.column.ColumnDescriptor;
import org.apache.parquet.column.Encoding;
import org.apache.parquet.column.EncodingStats;
import org.apache.parquet.column.ParquetProperties;
import org.apache.parquet.column.page.DictionaryPage;
import org.apache.parquet.column.statistics.Statistics;
import org.apache.parquet.column.values.bloomfilter.BloomFilter;
import org.apache.parquet.crypto.AesCipher;
import org.apache.parquet.crypto.ColumnEncryptionProperties;
import org.apache.parquet.crypto.FileEncryptionProperties;
import org.apache.parquet.crypto.InternalColumnEncryptionSetup;
import org.apache.parquet.crypto.InternalFileEncryptor;
import org.apache.parquet.crypto.ModuleCipherFactory;
import org.apache.parquet.crypto.ModuleCipherFactory.ModuleType;
import org.apache.parquet.crypto.ParquetCryptoRuntimeException;
import org.apache.parquet.hadoop.ParquetOutputFormat.JobSummaryLevel;
import org.apache.parquet.hadoop.metadata.ColumnPath;
import org.apache.parquet.format.BlockCipher;
import org.apache.parquet.format.Util;
import org.apache.parquet.format.converter.ParquetMetadataConverter;
import org.apache.parquet.hadoop.metadata.BlockMetaData;
import org.apache.parquet.hadoop.metadata.ColumnChunkMetaData;
import org.apache.parquet.hadoop.metadata.CompressionCodecName;
import org.apache.parquet.hadoop.metadata.StrictKeyValueMetadataMergeStrategy;
import org.apache.parquet.hadoop.metadata.FileMetaData;
import org.apache.parquet.hadoop.metadata.GlobalMetaData;
import org.apache.parquet.hadoop.metadata.KeyValueMetadataMergeStrategy;
import org.apache.parquet.hadoop.metadata.ParquetMetadata;
import org.apache.parquet.hadoop.util.HadoopOutputFile;
import org.apache.parquet.hadoop.util.HadoopStreams;
import org.apache.parquet.internal.column.columnindex.ColumnIndex;
import org.apache.parquet.internal.column.columnindex.ColumnIndexBuilder;
import org.apache.parquet.internal.column.columnindex.OffsetIndex;
import org.apache.parquet.internal.column.columnindex.OffsetIndexBuilder;
import org.apache.parquet.internal.hadoop.metadata.IndexReference;
import org.apache.parquet.io.InputFile;
import org.apache.parquet.io.OutputFile;
import org.apache.parquet.io.SeekableInputStream;
import org.apache.parquet.io.ParquetEncodingException;
import org.apache.parquet.io.PositionOutputStream;
import org.apache.parquet.schema.MessageType;
import org.apache.parquet.schema.PrimitiveType;
import org.apache.parquet.schema.TypeUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Internal implementation of the Parquet file writer as a block container
*/
public class ParquetFileWriter {
private static final Logger LOG = LoggerFactory.getLogger(ParquetFileWriter.class);
private final ParquetMetadataConverter metadataConverter;
public static final String PARQUET_METADATA_FILE = "_metadata";
public static final String MAGIC_STR = "PAR1";
public static final byte[] MAGIC = MAGIC_STR.getBytes(StandardCharsets.US_ASCII);
public static final String EF_MAGIC_STR = "PARE";
public static final byte[] EFMAGIC = EF_MAGIC_STR.getBytes(StandardCharsets.US_ASCII);
public static final String PARQUET_COMMON_METADATA_FILE = "_common_metadata";
public static final int CURRENT_VERSION = 1;
// File creation modes
public static enum Mode {
CREATE,
OVERWRITE
}
protected final PositionOutputStream out;
private final MessageType schema;
private final AlignmentStrategy alignment;
private final int columnIndexTruncateLength;
// file data
private List blocks = new ArrayList();
// The column/offset indexes per blocks per column chunks
private final List> columnIndexes = new ArrayList<>();
private final List> offsetIndexes = new ArrayList<>();
// The Bloom filters
private final List> bloomFilters = new ArrayList<>();
// The file encryptor
private final InternalFileEncryptor fileEncryptor;
// row group data
private BlockMetaData currentBlock; // appended to by endColumn
// The column/offset indexes for the actual block
private List currentColumnIndexes;
private List currentOffsetIndexes;
// The Bloom filter for the actual block
private Map currentBloomFilters;
// row group data set at the start of a row group
private long currentRecordCount; // set in startBlock
// column chunk data accumulated as pages are written
private EncodingStats.Builder encodingStatsBuilder;
private Set currentEncodings;
private long uncompressedLength;
private long compressedLength;
private Statistics currentStatistics; // accumulated in writePage(s)
private ColumnIndexBuilder columnIndexBuilder;
private OffsetIndexBuilder offsetIndexBuilder;
// column chunk data set at the start of a column
private CompressionCodecName currentChunkCodec; // set in startColumn
private ColumnPath currentChunkPath; // set in startColumn
private PrimitiveType currentChunkType; // set in startColumn
private long currentChunkValueCount; // set in startColumn
private long currentChunkFirstDataPage; // set in startColumn & page writes
private long currentChunkDictionaryPageOffset; // set in writeDictionaryPage
// set when end is called
private ParquetMetadata footer = null;
private final CRC32 crc;
private boolean pageWriteChecksumEnabled;
/**
* Captures the order in which methods should be called
*/
private enum STATE {
NOT_STARTED {
STATE start() {
return STARTED;
}
},
STARTED {
STATE startBlock() {
return BLOCK;
}
STATE end() {
return ENDED;
}
},
BLOCK {
STATE startColumn() {
return COLUMN;
}
STATE endBlock() {
return STARTED;
}
},
COLUMN {
STATE endColumn() {
return BLOCK;
};
STATE write() {
return this;
}
},
ENDED;
STATE start() throws IOException { return error(); }
STATE startBlock() throws IOException { return error(); }
STATE startColumn() throws IOException { return error(); }
STATE write() throws IOException { return error(); }
STATE endColumn() throws IOException { return error(); }
STATE endBlock() throws IOException { return error(); }
STATE end() throws IOException { return error(); }
private final STATE error() throws IOException {
throw new IOException("The file being written is in an invalid state. Probably caused by an error thrown previously. Current state: " + this.name());
}
}
private STATE state = STATE.NOT_STARTED;
/**
* @param configuration Hadoop configuration
* @param schema the schema of the data
* @param file the file to write to
* @throws IOException if the file can not be created
* @deprecated will be removed in 2.0.0
*/
@Deprecated
public ParquetFileWriter(Configuration configuration, MessageType schema,
Path file) throws IOException {
this(HadoopOutputFile.fromPath(file, configuration),
schema, Mode.CREATE, DEFAULT_BLOCK_SIZE, MAX_PADDING_SIZE_DEFAULT);
}
/**
* @param configuration Hadoop configuration
* @param schema the schema of the data
* @param file the file to write to
* @param mode file creation mode
* @throws IOException if the file can not be created
* @deprecated will be removed in 2.0.0
*/
@Deprecated
public ParquetFileWriter(Configuration configuration, MessageType schema,
Path file, Mode mode) throws IOException {
this(HadoopOutputFile.fromPath(file, configuration),
schema, mode, DEFAULT_BLOCK_SIZE, MAX_PADDING_SIZE_DEFAULT);
}
/**
* @param configuration Hadoop configuration
* @param schema the schema of the data
* @param file the file to write to
* @param mode file creation mode
* @param rowGroupSize the row group size
* @param maxPaddingSize the maximum padding
* @throws IOException if the file can not be created
* @deprecated will be removed in 2.0.0
*/
@Deprecated
public ParquetFileWriter(Configuration configuration, MessageType schema,
Path file, Mode mode, long rowGroupSize,
int maxPaddingSize)
throws IOException {
this(HadoopOutputFile.fromPath(file, configuration),
schema, mode, rowGroupSize, maxPaddingSize);
}
/**
* @param file OutputFile to create or overwrite
* @param schema the schema of the data
* @param mode file creation mode
* @param rowGroupSize the row group size
* @param maxPaddingSize the maximum padding
* @throws IOException if the file can not be created
* @deprecated will be removed in 2.0.0
*/
@Deprecated
public ParquetFileWriter(OutputFile file, MessageType schema, Mode mode,
long rowGroupSize, int maxPaddingSize)
throws IOException {
this(file, schema, mode, rowGroupSize, maxPaddingSize,
ParquetProperties.DEFAULT_COLUMN_INDEX_TRUNCATE_LENGTH,
ParquetProperties.DEFAULT_STATISTICS_TRUNCATE_LENGTH,
ParquetProperties.DEFAULT_PAGE_WRITE_CHECKSUM_ENABLED);
}
/**
* @param file OutputFile to create or overwrite
* @param schema the schema of the data
* @param mode file creation mode
* @param rowGroupSize the row group size
* @param maxPaddingSize the maximum padding
* @param columnIndexTruncateLength the length which the min/max values in column indexes tried to be truncated to
* @param statisticsTruncateLength the length which the min/max values in row groups tried to be truncated to
* @param pageWriteChecksumEnabled whether to write out page level checksums
* @throws IOException if the file can not be created
*/
public ParquetFileWriter(OutputFile file, MessageType schema, Mode mode,
long rowGroupSize, int maxPaddingSize, int columnIndexTruncateLength,
int statisticsTruncateLength, boolean pageWriteChecksumEnabled)
throws IOException{
this(file, schema, mode, rowGroupSize, maxPaddingSize, columnIndexTruncateLength,
statisticsTruncateLength, pageWriteChecksumEnabled, null, null);
}
public ParquetFileWriter(OutputFile file, MessageType schema, Mode mode,
long rowGroupSize, int maxPaddingSize, int columnIndexTruncateLength,
int statisticsTruncateLength, boolean pageWriteChecksumEnabled,
FileEncryptionProperties encryptionProperties)
throws IOException {
this(file, schema, mode, rowGroupSize, maxPaddingSize, columnIndexTruncateLength,
statisticsTruncateLength, pageWriteChecksumEnabled, encryptionProperties, null);
}
public ParquetFileWriter(OutputFile file, MessageType schema, Mode mode,
long rowGroupSize, int maxPaddingSize, int columnIndexTruncateLength,
int statisticsTruncateLength, boolean pageWriteChecksumEnabled,
InternalFileEncryptor encryptor)
throws IOException {
this(file, schema, mode, rowGroupSize, maxPaddingSize, columnIndexTruncateLength,
statisticsTruncateLength, pageWriteChecksumEnabled, null, encryptor);
}
private ParquetFileWriter(OutputFile file, MessageType schema, Mode mode,
long rowGroupSize, int maxPaddingSize, int columnIndexTruncateLength,
int statisticsTruncateLength, boolean pageWriteChecksumEnabled,
FileEncryptionProperties encryptionProperties, InternalFileEncryptor encryptor)
throws IOException {
TypeUtil.checkValidWriteSchema(schema);
this.schema = schema;
long blockSize = rowGroupSize;
if (file.supportsBlockSize()) {
blockSize = Math.max(file.defaultBlockSize(), rowGroupSize);
this.alignment = PaddingAlignment.get(blockSize, rowGroupSize, maxPaddingSize);
} else {
this.alignment = NoAlignment.get(rowGroupSize);
}
if (mode == Mode.OVERWRITE) {
this.out = file.createOrOverwrite(blockSize);
} else {
this.out = file.create(blockSize);
}
this.encodingStatsBuilder = new EncodingStats.Builder();
this.columnIndexTruncateLength = columnIndexTruncateLength;
this.pageWriteChecksumEnabled = pageWriteChecksumEnabled;
this.crc = pageWriteChecksumEnabled ? new CRC32() : null;
this.metadataConverter = new ParquetMetadataConverter(statisticsTruncateLength);
if (null == encryptionProperties && null == encryptor) {
this.fileEncryptor = null;
return;
}
if (null == encryptionProperties) {
encryptionProperties = encryptor.getEncryptionProperties();
}
// Verify that every encrypted column is in file schema
Map columnEncryptionProperties = encryptionProperties.getEncryptedColumns();
if (null != columnEncryptionProperties) { // if null, every column in file schema will be encrypted with footer key
for (Map.Entry entry : columnEncryptionProperties.entrySet()) {
String[] path = entry.getKey().toArray();
if (!schema.containsPath(path)) {
StringBuilder columnList = new StringBuilder();
columnList.append("[");
for (String[] columnPath : schema.getPaths()) {
columnList.append(ColumnPath.get(columnPath).toDotString() + "], [");
}
throw new ParquetCryptoRuntimeException("Encrypted column [" + entry.getKey().toDotString() +
"] not in file schema column list: " + columnList.substring(0, columnList.length() - 3));
}
}
}
if (null == encryptor) {
this.fileEncryptor = new InternalFileEncryptor(encryptionProperties);
} else {
this.fileEncryptor = encryptor;
}
}
/**
* FOR TESTING ONLY. This supports testing block padding behavior on the local FS.
*
* @param configuration Hadoop configuration
* @param schema the schema of the data
* @param file the file to write to
* @param rowAndBlockSize the row group size
* @param maxPaddingSize the maximum padding
* @throws IOException if the file can not be created
*/
ParquetFileWriter(Configuration configuration, MessageType schema,
Path file, long rowAndBlockSize, int maxPaddingSize)
throws IOException {
FileSystem fs = file.getFileSystem(configuration);
this.schema = schema;
this.alignment = PaddingAlignment.get(
rowAndBlockSize, rowAndBlockSize, maxPaddingSize);
this.out = HadoopStreams.wrap(
fs.create(file, true, 8192, fs.getDefaultReplication(file), rowAndBlockSize));
this.encodingStatsBuilder = new EncodingStats.Builder();
// no truncation is needed for testing
this.columnIndexTruncateLength = Integer.MAX_VALUE;
this.pageWriteChecksumEnabled = ParquetOutputFormat.getPageWriteChecksumEnabled(configuration);
this.crc = pageWriteChecksumEnabled ? new CRC32() : null;
this.metadataConverter = new ParquetMetadataConverter(ParquetProperties.DEFAULT_STATISTICS_TRUNCATE_LENGTH);
this.fileEncryptor = null;
}
/**
* start the file
* @throws IOException if there is an error while writing
*/
public void start() throws IOException {
state = state.start();
LOG.debug("{}: start", out.getPos());
byte[] magic = MAGIC;
if (null != fileEncryptor && fileEncryptor.isFooterEncrypted()) {
magic = EFMAGIC;
}
out.write(magic);
}
public InternalFileEncryptor getEncryptor() {
return fileEncryptor;
}
/**
* start a block
* @param recordCount the record count in this block
* @throws IOException if there is an error while writing
*/
public void startBlock(long recordCount) throws IOException {
state = state.startBlock();
LOG.debug("{}: start block", out.getPos());
// out.write(MAGIC); // TODO: add a magic delimiter
alignment.alignForRowGroup(out);
currentBlock = new BlockMetaData();
currentRecordCount = recordCount;
currentColumnIndexes = new ArrayList<>();
currentOffsetIndexes = new ArrayList<>();
currentBloomFilters = new HashMap<>();
}
/**
* start a column inside a block
* @param descriptor the column descriptor
* @param valueCount the value count in this column
* @param compressionCodecName a compression codec name
* @throws IOException if there is an error while writing
*/
public void startColumn(ColumnDescriptor descriptor,
long valueCount,
CompressionCodecName compressionCodecName) throws IOException {
state = state.startColumn();
encodingStatsBuilder.clear();
currentEncodings = new HashSet();
currentChunkPath = ColumnPath.get(descriptor.getPath());
currentChunkType = descriptor.getPrimitiveType();
currentChunkCodec = compressionCodecName;
currentChunkValueCount = valueCount;
currentChunkFirstDataPage = -1;
compressedLength = 0;
uncompressedLength = 0;
// The statistics will be copied from the first one added at writeDataPage(s) so we have the correct typed one
currentStatistics = null;
columnIndexBuilder = ColumnIndexBuilder.getBuilder(currentChunkType, columnIndexTruncateLength);
offsetIndexBuilder = OffsetIndexBuilder.getBuilder();
}
/**
* writes a dictionary page page
* @param dictionaryPage the dictionary page
* @throws IOException if there is an error while writing
*/
public void writeDictionaryPage(DictionaryPage dictionaryPage) throws IOException {
writeDictionaryPage(dictionaryPage, null, null);
}
public void writeDictionaryPage(DictionaryPage dictionaryPage,
BlockCipher.Encryptor headerBlockEncryptor, byte[] AAD) throws IOException {
state = state.write();
LOG.debug("{}: write dictionary page: {} values", out.getPos(), dictionaryPage.getDictionarySize());
currentChunkDictionaryPageOffset = out.getPos();
int uncompressedSize = dictionaryPage.getUncompressedSize();
int compressedPageSize = (int)dictionaryPage.getBytes().size(); // TODO: fix casts
if (pageWriteChecksumEnabled) {
crc.reset();
crc.update(dictionaryPage.getBytes().toByteArray());
metadataConverter.writeDictionaryPageHeader(
uncompressedSize,
compressedPageSize,
dictionaryPage.getDictionarySize(),
dictionaryPage.getEncoding(),
(int) crc.getValue(),
out,
headerBlockEncryptor,
AAD);
} else {
metadataConverter.writeDictionaryPageHeader(
uncompressedSize,
compressedPageSize,
dictionaryPage.getDictionarySize(),
dictionaryPage.getEncoding(),
out,
headerBlockEncryptor,
AAD);
}
long headerSize = out.getPos() - currentChunkDictionaryPageOffset;
this.uncompressedLength += uncompressedSize + headerSize;
this.compressedLength += compressedPageSize + headerSize;
LOG.debug("{}: write dictionary page content {}", out.getPos(), compressedPageSize);
dictionaryPage.getBytes().writeAllTo(out); // for encrypted column, dictionary page bytes are already encrypted
encodingStatsBuilder.addDictEncoding(dictionaryPage.getEncoding());
currentEncodings.add(dictionaryPage.getEncoding());
}
/**
* writes a single page
* @param valueCount count of values
* @param uncompressedPageSize the size of the data once uncompressed
* @param bytes the compressed data for the page without header
* @param rlEncoding encoding of the repetition level
* @param dlEncoding encoding of the definition level
* @param valuesEncoding encoding of values
* @throws IOException if there is an error while writing
*/
@Deprecated
public void writeDataPage(
int valueCount, int uncompressedPageSize,
BytesInput bytes,
Encoding rlEncoding,
Encoding dlEncoding,
Encoding valuesEncoding) throws IOException {
state = state.write();
// We are unable to build indexes without rowCount so skip them for this column
offsetIndexBuilder = OffsetIndexBuilder.getNoOpBuilder();
columnIndexBuilder = ColumnIndexBuilder.getNoOpBuilder();
long beforeHeader = out.getPos();
LOG.debug("{}: write data page: {} values", beforeHeader, valueCount);
int compressedPageSize = (int)bytes.size();
metadataConverter.writeDataPageV1Header(
uncompressedPageSize, compressedPageSize,
valueCount,
rlEncoding,
dlEncoding,
valuesEncoding,
out);
long headerSize = out.getPos() - beforeHeader;
this.uncompressedLength += uncompressedPageSize + headerSize;
this.compressedLength += compressedPageSize + headerSize;
LOG.debug("{}: write data page content {}", out.getPos(), compressedPageSize);
bytes.writeAllTo(out);
encodingStatsBuilder.addDataEncoding(valuesEncoding);
currentEncodings.add(rlEncoding);
currentEncodings.add(dlEncoding);
currentEncodings.add(valuesEncoding);
if (currentChunkFirstDataPage < 0) {
currentChunkFirstDataPage = beforeHeader;
}
}
/**
* writes a single page
* @param valueCount count of values
* @param uncompressedPageSize the size of the data once uncompressed
* @param bytes the compressed data for the page without header
* @param statistics statistics for the page
* @param rlEncoding encoding of the repetition level
* @param dlEncoding encoding of the definition level
* @param valuesEncoding encoding of values
* @throws IOException if there is an error while writing
* @deprecated this method does not support writing column indexes; Use
* {@link #writeDataPage(int, int, BytesInput, Statistics, long, Encoding, Encoding, Encoding)} instead
*/
@Deprecated
public void writeDataPage(
int valueCount, int uncompressedPageSize,
BytesInput bytes,
Statistics statistics,
Encoding rlEncoding,
Encoding dlEncoding,
Encoding valuesEncoding) throws IOException {
// We are unable to build indexes without rowCount so skip them for this column
offsetIndexBuilder = OffsetIndexBuilder.getNoOpBuilder();
columnIndexBuilder = ColumnIndexBuilder.getNoOpBuilder();
innerWriteDataPage(valueCount, uncompressedPageSize, bytes, statistics, rlEncoding, dlEncoding, valuesEncoding, null, null);
}
/**
* Writes a single page
* @param valueCount count of values
* @param uncompressedPageSize the size of the data once uncompressed
* @param bytes the compressed data for the page without header
* @param statistics the statistics of the page
* @param rowCount the number of rows in the page
* @param rlEncoding encoding of the repetition level
* @param dlEncoding encoding of the definition level
* @param valuesEncoding encoding of values
* @throws IOException if any I/O error occurs during writing the file
*/
public void writeDataPage(
int valueCount, int uncompressedPageSize,
BytesInput bytes,
Statistics statistics,
long rowCount,
Encoding rlEncoding,
Encoding dlEncoding,
Encoding valuesEncoding) throws IOException {
writeDataPage(valueCount, uncompressedPageSize, bytes, statistics, rowCount, rlEncoding, dlEncoding, valuesEncoding, null, null);
}
/**
* Writes a single page
* @param valueCount count of values
* @param uncompressedPageSize the size of the data once uncompressed
* @param bytes the compressed data for the page without header
* @param statistics the statistics of the page
* @param rowCount the number of rows in the page
* @param rlEncoding encoding of the repetition level
* @param dlEncoding encoding of the definition level
* @param valuesEncoding encoding of values
* @param metadataBlockEncryptor encryptor for block data
* @param pageHeaderAAD pageHeader AAD
* @throws IOException if any I/O error occurs during writing the file
*/
public void writeDataPage(
int valueCount, int uncompressedPageSize,
BytesInput bytes,
Statistics statistics,
long rowCount,
Encoding rlEncoding,
Encoding dlEncoding,
Encoding valuesEncoding,
BlockCipher.Encryptor metadataBlockEncryptor,
byte[] pageHeaderAAD) throws IOException {
long beforeHeader = out.getPos();
innerWriteDataPage(valueCount, uncompressedPageSize, bytes, statistics, rlEncoding, dlEncoding, valuesEncoding, metadataBlockEncryptor, pageHeaderAAD);
offsetIndexBuilder.add((int) (out.getPos() - beforeHeader), rowCount);
}
private void innerWriteDataPage(
int valueCount, int uncompressedPageSize,
BytesInput bytes,
Statistics statistics,
Encoding rlEncoding,
Encoding dlEncoding,
Encoding valuesEncoding,
BlockCipher.Encryptor metadataBlockEncryptor,
byte[] pageHeaderAAD) throws IOException {
writeDataPage(valueCount, uncompressedPageSize, bytes, statistics, rlEncoding, dlEncoding, valuesEncoding, metadataBlockEncryptor, pageHeaderAAD);
}
/**
* writes a single page
* @param valueCount count of values
* @param uncompressedPageSize the size of the data once uncompressed
* @param bytes the compressed data for the page without header
* @param statistics statistics for the page
* @param rlEncoding encoding of the repetition level
* @param dlEncoding encoding of the definition level
* @param valuesEncoding encoding of values
* @param metadataBlockEncryptor encryptor for block data
* @param pageHeaderAAD pageHeader AAD
* @throws IOException if there is an error while writing
*/
public void writeDataPage(
int valueCount, int uncompressedPageSize,
BytesInput bytes,
Statistics statistics,
Encoding rlEncoding,
Encoding dlEncoding,
Encoding valuesEncoding,
BlockCipher.Encryptor metadataBlockEncryptor,
byte[] pageHeaderAAD) throws IOException {
state = state.write();
long beforeHeader = out.getPos();
if (currentChunkFirstDataPage < 0) {
currentChunkFirstDataPage = beforeHeader;
}
LOG.debug("{}: write data page: {} values", beforeHeader, valueCount);
int compressedPageSize = (int) bytes.size();
if (pageWriteChecksumEnabled) {
crc.reset();
crc.update(bytes.toByteArray());
metadataConverter.writeDataPageV1Header(
uncompressedPageSize, compressedPageSize,
valueCount,
rlEncoding,
dlEncoding,
valuesEncoding,
(int) crc.getValue(),
out,
metadataBlockEncryptor,
pageHeaderAAD);
} else {
metadataConverter.writeDataPageV1Header(
uncompressedPageSize, compressedPageSize,
valueCount,
rlEncoding,
dlEncoding,
valuesEncoding,
out,
metadataBlockEncryptor,
pageHeaderAAD);
}
long headerSize = out.getPos() - beforeHeader;
this.uncompressedLength += uncompressedPageSize + headerSize;
this.compressedLength += compressedPageSize + headerSize;
LOG.debug("{}: write data page content {}", out.getPos(), compressedPageSize);
bytes.writeAllTo(out);
// Copying the statistics if it is not initialized yet so we have the correct typed one
if (currentStatistics == null) {
currentStatistics = statistics.copy();
} else {
currentStatistics.mergeStatistics(statistics);
}
columnIndexBuilder.add(statistics);
encodingStatsBuilder.addDataEncoding(valuesEncoding);
currentEncodings.add(rlEncoding);
currentEncodings.add(dlEncoding);
currentEncodings.add(valuesEncoding);
}
/**
* Add a Bloom filter that will be written out. This is only used in unit test.
*
* @param column the column name
* @param bloomFilter the bloom filter of column values
*/
void addBloomFilter(String column, BloomFilter bloomFilter) {
currentBloomFilters.put(column , bloomFilter);
}
/**
* Writes a single v2 data page
* @param rowCount count of rows
* @param nullCount count of nulls
* @param valueCount count of values
* @param repetitionLevels repetition level bytes
* @param definitionLevels definition level bytes
* @param dataEncoding encoding for data
* @param compressedData compressed data bytes
* @param uncompressedDataSize the size of uncompressed data
* @param statistics the statistics of the page
* @throws IOException if any I/O error occurs during writing the file
*/
public void writeDataPageV2(int rowCount, int nullCount, int valueCount,
BytesInput repetitionLevels,
BytesInput definitionLevels,
Encoding dataEncoding,
BytesInput compressedData,
int uncompressedDataSize,
Statistics statistics) throws IOException {
state = state.write();
int rlByteLength = toIntWithCheck(repetitionLevels.size());
int dlByteLength = toIntWithCheck(definitionLevels.size());
int compressedSize = toIntWithCheck(
compressedData.size() + repetitionLevels.size() + definitionLevels.size()
);
int uncompressedSize = toIntWithCheck(
uncompressedDataSize + repetitionLevels.size() + definitionLevels.size()
);
long beforeHeader = out.getPos();
if (currentChunkFirstDataPage < 0) {
currentChunkFirstDataPage = beforeHeader;
}
metadataConverter.writeDataPageV2Header(
uncompressedSize, compressedSize,
valueCount, nullCount, rowCount,
dataEncoding,
rlByteLength,
dlByteLength,
out);
long headersSize = out.getPos() - beforeHeader;
this.uncompressedLength += uncompressedSize + headersSize;
this.compressedLength += compressedSize + headersSize;
if (currentStatistics == null) {
currentStatistics = statistics.copy();
} else {
currentStatistics.mergeStatistics(statistics);
}
columnIndexBuilder.add(statistics);
currentEncodings.add(dataEncoding);
encodingStatsBuilder.addDataEncoding(dataEncoding);
BytesInput.concat(repetitionLevels, definitionLevels, compressedData)
.writeAllTo(out);
offsetIndexBuilder.add((int) (out.getPos() - beforeHeader), rowCount);
}
/**
* Writes a column chunk at once
* @param descriptor the descriptor of the column
* @param valueCount the value count in this column
* @param compressionCodecName the name of the compression codec used for compressing the pages
* @param dictionaryPage the dictionary page for this column chunk (might be null)
* @param bytes the encoded pages including page headers to be written as is
* @param uncompressedTotalPageSize total uncompressed size (without page headers)
* @param compressedTotalPageSize total compressed size (without page headers)
* @param totalStats accumulated statistics for the column chunk
* @param columnIndexBuilder the builder object for the column index
* @param offsetIndexBuilder the builder object for the offset index
* @param bloomFilter the bloom filter for this column
* @param rlEncodings the RL encodings used in this column chunk
* @param dlEncodings the DL encodings used in this column chunk
* @param dataEncodings the data encodings used in this column chunk
* @throws IOException if there is an error while writing
*/
void writeColumnChunk(ColumnDescriptor descriptor,
long valueCount,
CompressionCodecName compressionCodecName,
DictionaryPage dictionaryPage,
BytesInput bytes,
long uncompressedTotalPageSize,
long compressedTotalPageSize,
Statistics totalStats,
ColumnIndexBuilder columnIndexBuilder,
OffsetIndexBuilder offsetIndexBuilder,
BloomFilter bloomFilter,
Set rlEncodings,
Set dlEncodings,
List dataEncodings) throws IOException {
writeColumnChunk(descriptor, valueCount, compressionCodecName, dictionaryPage, bytes,
uncompressedTotalPageSize, compressedTotalPageSize, totalStats, columnIndexBuilder, offsetIndexBuilder,
bloomFilter, rlEncodings, dlEncodings, dataEncodings, null, 0, 0, null);
}
void writeColumnChunk(ColumnDescriptor descriptor,
long valueCount,
CompressionCodecName compressionCodecName,
DictionaryPage dictionaryPage,
BytesInput bytes,
long uncompressedTotalPageSize,
long compressedTotalPageSize,
Statistics totalStats,
ColumnIndexBuilder columnIndexBuilder,
OffsetIndexBuilder offsetIndexBuilder,
BloomFilter bloomFilter,
Set rlEncodings,
Set dlEncodings,
List dataEncodings,
BlockCipher.Encryptor headerBlockEncryptor,
int rowGroupOrdinal,
int columnOrdinal,
byte[] fileAAD) throws IOException {
startColumn(descriptor, valueCount, compressionCodecName);
state = state.write();
if (dictionaryPage != null) {
byte[] dictonaryPageHeaderAAD = null;
if (null != headerBlockEncryptor) {
dictonaryPageHeaderAAD = AesCipher.createModuleAAD(fileAAD, ModuleType.DictionaryPageHeader,
rowGroupOrdinal, columnOrdinal, -1);
}
writeDictionaryPage(dictionaryPage, headerBlockEncryptor, dictonaryPageHeaderAAD);
}
if (bloomFilter != null) {
// write bloom filter if one of data pages is not dictionary encoded
boolean isWriteBloomFilter = false;
for (Encoding encoding : dataEncodings) {
// dictionary encoding: `PLAIN_DICTIONARY` is used in parquet v1, `RLE_DICTIONARY` is used in parquet v2
if (encoding != Encoding.PLAIN_DICTIONARY && encoding != Encoding.RLE_DICTIONARY) {
isWriteBloomFilter = true;
break;
}
}
if (isWriteBloomFilter) {
currentBloomFilters.put(String.join(".", descriptor.getPath()), bloomFilter);
}
}
LOG.debug("{}: write data pages", out.getPos());
long headersSize = bytes.size() - compressedTotalPageSize;
this.uncompressedLength += uncompressedTotalPageSize + headersSize;
this.compressedLength += compressedTotalPageSize + headersSize;
LOG.debug("{}: write data pages content", out.getPos());
currentChunkFirstDataPage = out.getPos();
bytes.writeAllTo(out);
encodingStatsBuilder.addDataEncodings(dataEncodings);
if (rlEncodings.isEmpty()) {
encodingStatsBuilder.withV2Pages();
}
currentEncodings.addAll(rlEncodings);
currentEncodings.addAll(dlEncodings);
currentEncodings.addAll(dataEncodings);
currentStatistics = totalStats;
this.columnIndexBuilder = columnIndexBuilder;
this.offsetIndexBuilder = offsetIndexBuilder;
endColumn();
}
/**
* end a column (once all rep, def and data have been written)
* @throws IOException if there is an error while writing
*/
public void endColumn() throws IOException {
state = state.endColumn();
LOG.debug("{}: end column", out.getPos());
if (columnIndexBuilder.getMinMaxSize() > columnIndexBuilder.getPageCount() * MAX_STATS_SIZE) {
currentColumnIndexes.add(null);
} else {
currentColumnIndexes.add(columnIndexBuilder.build());
}
currentOffsetIndexes.add(offsetIndexBuilder.build(currentChunkFirstDataPage));
currentBlock.addColumn(ColumnChunkMetaData.get(
currentChunkPath,
currentChunkType,
currentChunkCodec,
encodingStatsBuilder.build(),
currentEncodings,
currentStatistics,
currentChunkFirstDataPage,
currentChunkDictionaryPageOffset,
currentChunkValueCount,
compressedLength,
uncompressedLength));
this.currentBlock.setTotalByteSize(currentBlock.getTotalByteSize() + uncompressedLength);
this.uncompressedLength = 0;
this.compressedLength = 0;
this.currentChunkDictionaryPageOffset = 0;
columnIndexBuilder = null;
offsetIndexBuilder = null;
}
/**
* ends a block once all column chunks have been written
* @throws IOException if there is an error while writing
*/
public void endBlock() throws IOException {
if (currentRecordCount == 0) {
throw new ParquetEncodingException("End block with zero record");
}
state = state.endBlock();
LOG.debug("{}: end block", out.getPos());
currentBlock.setRowCount(currentRecordCount);
currentBlock.setOrdinal(blocks.size());
blocks.add(currentBlock);
columnIndexes.add(currentColumnIndexes);
offsetIndexes.add(currentOffsetIndexes);
bloomFilters.add(currentBloomFilters);
currentColumnIndexes = null;
currentOffsetIndexes = null;
currentBloomFilters = null;
currentBlock = null;
}
/**
* @param conf a configuration
* @param file a file path to append the contents of to this file
* @throws IOException if there is an error while reading or writing
* @deprecated will be removed in 2.0.0; use {@link #appendFile(InputFile)} instead
*/
@Deprecated
public void appendFile(Configuration conf, Path file) throws IOException {
try (ParquetFileReader reader = ParquetFileReader.open(conf, file)) {
reader.appendTo(this);
}
}
public void appendFile(InputFile file) throws IOException {
try (ParquetFileReader reader = ParquetFileReader.open(file)) {
reader.appendTo(this);
}
}
/**
* @param file a file stream to read from
* @param rowGroups row groups to copy
* @param dropColumns whether to drop columns from the file that are not in this file's schema
* @throws IOException if there is an error while reading or writing
* @deprecated will be removed in 2.0.0;
* use {@link #appendRowGroups(SeekableInputStream,List,boolean)} instead
*/
@Deprecated
public void appendRowGroups(FSDataInputStream file,
List rowGroups,
boolean dropColumns) throws IOException {
appendRowGroups(HadoopStreams.wrap(file), rowGroups, dropColumns);
}
public void appendRowGroups(SeekableInputStream file,
List rowGroups,
boolean dropColumns) throws IOException {
for (BlockMetaData block : rowGroups) {
appendRowGroup(file, block, dropColumns);
}
}
/**
* @param from a file stream to read from
* @param rowGroup row group to copy
* @param dropColumns whether to drop columns from the file that are not in this file's schema
* @throws IOException if there is an error while reading or writing
* @deprecated will be removed in 2.0.0;
* use {@link #appendRowGroup(SeekableInputStream,BlockMetaData,boolean)} instead
*/
@Deprecated
public void appendRowGroup(FSDataInputStream from, BlockMetaData rowGroup,
boolean dropColumns) throws IOException {
appendRowGroup(HadoopStreams.wrap(from), rowGroup, dropColumns);
}
public void appendRowGroup(SeekableInputStream from, BlockMetaData rowGroup,
boolean dropColumns) throws IOException {
startBlock(rowGroup.getRowCount());
Map columnsToCopy =
new HashMap();
for (ColumnChunkMetaData chunk : rowGroup.getColumns()) {
columnsToCopy.put(chunk.getPath().toDotString(), chunk);
}
List columnsInOrder =
new ArrayList();
for (ColumnDescriptor descriptor : schema.getColumns()) {
String path = ColumnPath.get(descriptor.getPath()).toDotString();
ColumnChunkMetaData chunk = columnsToCopy.remove(path);
if (chunk != null) {
columnsInOrder.add(chunk);
} else {
throw new IllegalArgumentException(String.format(
"Missing column '%s', cannot copy row group: %s", path, rowGroup));
}
}
// complain if some columns would be dropped and that's not okay
if (!dropColumns && !columnsToCopy.isEmpty()) {
throw new IllegalArgumentException(String.format(
"Columns cannot be copied (missing from target schema): %s",
String.join(", ", columnsToCopy.keySet())));
}
// copy the data for all chunks
long start = -1;
long length = 0;
long blockUncompressedSize = 0L;
for (int i = 0; i < columnsInOrder.size(); i += 1) {
ColumnChunkMetaData chunk = columnsInOrder.get(i);
// get this chunk's start position in the new file
long newChunkStart = out.getPos() + length;
// add this chunk to be copied with any previous chunks
if (start < 0) {
// no previous chunk included, start at this chunk's starting pos
start = chunk.getStartingPos();
}
length += chunk.getTotalSize();
if ((i + 1) == columnsInOrder.size() ||
columnsInOrder.get(i + 1).getStartingPos() != (start + length)) {
// not contiguous. do the copy now.
copy(from, out, start, length);
// reset to start at the next column chunk
start = -1;
length = 0;
}
// TODO: column/offset indexes are not copied
// (it would require seeking to the end of the file for each row groups)
currentColumnIndexes.add(null);
currentOffsetIndexes.add(null);
Offsets offsets = Offsets.getOffsets(from, chunk, newChunkStart);
currentBlock.addColumn(ColumnChunkMetaData.get(
chunk.getPath(),
chunk.getPrimitiveType(),
chunk.getCodec(),
chunk.getEncodingStats(),
chunk.getEncodings(),
chunk.getStatistics(),
offsets.firstDataPageOffset,
offsets.dictionaryPageOffset,
chunk.getValueCount(),
chunk.getTotalSize(),
chunk.getTotalUncompressedSize()));
blockUncompressedSize += chunk.getTotalUncompressedSize();
}
currentBlock.setTotalByteSize(blockUncompressedSize);
endBlock();
}
/**
* @param descriptor the descriptor for the target column
* @param from a file stream to read from
* @param chunk the column chunk to be copied
* @param bloomFilter the bloomFilter for this chunk
* @param columnIndex the column index for this chunk
* @param offsetIndex the offset index for this chunk
* @throws IOException
*/
public void appendColumnChunk(ColumnDescriptor descriptor, SeekableInputStream from, ColumnChunkMetaData chunk,
BloomFilter bloomFilter, ColumnIndex columnIndex, OffsetIndex offsetIndex) throws IOException {
long start = chunk.getStartingPos();
long length = chunk.getTotalSize();
long newChunkStart = out.getPos();
if (offsetIndex != null && newChunkStart != start) {
offsetIndex = OffsetIndexBuilder.getBuilder()
.fromOffsetIndex(offsetIndex)
.build(newChunkStart - start);
}
copy(from, out, start, length);
currentBloomFilters.put(String.join(".", descriptor.getPath()), bloomFilter);
currentColumnIndexes.add(columnIndex);
currentOffsetIndexes.add(offsetIndex);
Offsets offsets = Offsets.getOffsets(from, chunk, newChunkStart);
currentBlock.addColumn(ColumnChunkMetaData.get(
chunk.getPath(),
chunk.getPrimitiveType(),
chunk.getCodec(),
chunk.getEncodingStats(),
chunk.getEncodings(),
chunk.getStatistics(),
offsets.firstDataPageOffset,
offsets.dictionaryPageOffset,
chunk.getValueCount(),
chunk.getTotalSize(),
chunk.getTotalUncompressedSize()));
currentBlock.setTotalByteSize(currentBlock.getTotalByteSize() + chunk.getTotalUncompressedSize());
}
// Buffers for the copy function.
private static final ThreadLocal COPY_BUFFER = ThreadLocal.withInitial(() -> new byte[8192]);
/**
* Copy from a FS input stream to an output stream. Thread-safe
*
* @param from a {@link SeekableInputStream}
* @param to any {@link PositionOutputStream}
* @param start where in the from stream to start copying
* @param length the number of bytes to copy
* @throws IOException if there is an error while reading or writing
*/
private static void copy(SeekableInputStream from, PositionOutputStream to,
long start, long length) throws IOException{
LOG.debug("Copying {} bytes at {} to {}" ,length , start , to.getPos());
from.seek(start);
long bytesCopied = 0;
byte[] buffer = COPY_BUFFER.get();
while (bytesCopied < length) {
long bytesLeft = length - bytesCopied;
int bytesRead = from.read(buffer, 0,
(buffer.length < bytesLeft ? buffer.length : (int) bytesLeft));
if (bytesRead < 0) {
throw new IllegalArgumentException(
"Unexpected end of input file at " + start + bytesCopied);
}
to.write(buffer, 0, bytesRead);
bytesCopied += bytesRead;
}
}
/**
* ends a file once all blocks have been written.
* closes the file.
* @param extraMetaData the extra meta data to write in the footer
* @throws IOException if there is an error while writing
*/
public void end(Map extraMetaData) throws IOException {
state = state.end();
serializeColumnIndexes(columnIndexes, blocks, out, fileEncryptor);
serializeOffsetIndexes(offsetIndexes, blocks, out, fileEncryptor);
serializeBloomFilters(bloomFilters, blocks, out, fileEncryptor);
LOG.debug("{}: end", out.getPos());
this.footer = new ParquetMetadata(new FileMetaData(schema, extraMetaData, Version.FULL_VERSION), blocks);
serializeFooter(footer, out, fileEncryptor, metadataConverter);
out.close();
}
private static void serializeColumnIndexes(
List> columnIndexes,
List blocks,
PositionOutputStream out,
InternalFileEncryptor fileEncryptor) throws IOException {
LOG.debug("{}: column indexes", out.getPos());
for (int bIndex = 0, bSize = blocks.size(); bIndex < bSize; ++bIndex) {
BlockMetaData block = blocks.get(bIndex);
List columns = block.getColumns();
List blockColumnIndexes = columnIndexes.get(bIndex);
for (int cIndex = 0, cSize = columns.size(); cIndex < cSize; ++cIndex) {
ColumnChunkMetaData column = columns.get(cIndex);
org.apache.parquet.format.ColumnIndex columnIndex = ParquetMetadataConverter
.toParquetColumnIndex(column.getPrimitiveType(), blockColumnIndexes.get(cIndex));
if (columnIndex == null) {
continue;
}
BlockCipher.Encryptor columnIndexEncryptor = null;
byte[] columnIndexAAD = null;
if (null != fileEncryptor) {
InternalColumnEncryptionSetup columnEncryptionSetup = fileEncryptor.getColumnSetup(column.getPath(), false, cIndex);
if (columnEncryptionSetup.isEncrypted()) {
columnIndexEncryptor = columnEncryptionSetup.getMetaDataEncryptor();
columnIndexAAD = AesCipher.createModuleAAD(fileEncryptor.getFileAAD(), ModuleType.ColumnIndex,
block.getOrdinal(), columnEncryptionSetup.getOrdinal(), -1);
}
}
long offset = out.getPos();
Util.writeColumnIndex(columnIndex, out, columnIndexEncryptor, columnIndexAAD);
column.setColumnIndexReference(new IndexReference(offset, (int) (out.getPos() - offset)));
}
}
}
private int toIntWithCheck(long size) {
if ((int)size != size) {
throw new ParquetEncodingException("Cannot write page larger than " + Integer.MAX_VALUE + " bytes: " + size);
}
return (int)size;
}
private static void serializeOffsetIndexes(
List> offsetIndexes,
List blocks,
PositionOutputStream out,
InternalFileEncryptor fileEncryptor) throws IOException {
LOG.debug("{}: offset indexes", out.getPos());
for (int bIndex = 0, bSize = blocks.size(); bIndex < bSize; ++bIndex) {
BlockMetaData block = blocks.get(bIndex);
List columns = block.getColumns();
List blockOffsetIndexes = offsetIndexes.get(bIndex);
for (int cIndex = 0, cSize = columns.size(); cIndex < cSize; ++cIndex) {
OffsetIndex offsetIndex = blockOffsetIndexes.get(cIndex);
if (offsetIndex == null) {
continue;
}
ColumnChunkMetaData column = columns.get(cIndex);
BlockCipher.Encryptor offsetIndexEncryptor = null;
byte[] offsetIndexAAD = null;
if (null != fileEncryptor) {
InternalColumnEncryptionSetup columnEncryptionSetup = fileEncryptor.getColumnSetup(column.getPath(), false, cIndex);
if (columnEncryptionSetup.isEncrypted()) {
offsetIndexEncryptor = columnEncryptionSetup.getMetaDataEncryptor();
offsetIndexAAD = AesCipher.createModuleAAD(fileEncryptor.getFileAAD(), ModuleType.OffsetIndex,
block.getOrdinal(), columnEncryptionSetup.getOrdinal(), -1);
}
}
long offset = out.getPos();
Util.writeOffsetIndex(ParquetMetadataConverter.toParquetOffsetIndex(offsetIndex), out, offsetIndexEncryptor, offsetIndexAAD);
column.setOffsetIndexReference(new IndexReference(offset, (int) (out.getPos() - offset)));
}
}
}
private static void serializeBloomFilters(
List> bloomFilters,
List blocks,
PositionOutputStream out,
InternalFileEncryptor fileEncryptor) throws IOException {
LOG.debug("{}: bloom filters", out.getPos());
for (int bIndex = 0, bSize = blocks.size(); bIndex < bSize; ++bIndex) {
BlockMetaData block = blocks.get(bIndex);
List columns = block.getColumns();
Map blockBloomFilters = bloomFilters.get(bIndex);
if (blockBloomFilters.isEmpty()) continue;
for (int cIndex = 0, cSize = columns.size(); cIndex < cSize; ++cIndex) {
ColumnChunkMetaData column = columns.get(cIndex);
BloomFilter bloomFilter = blockBloomFilters.get(column.getPath().toDotString());
if (bloomFilter == null) {
continue;
}
long offset = out.getPos();
column.setBloomFilterOffset(offset);
BlockCipher.Encryptor bloomFilterEncryptor = null;
byte[] bloomFilterHeaderAAD = null;
byte[] bloomFilterBitsetAAD = null;
if (null != fileEncryptor) {
InternalColumnEncryptionSetup columnEncryptionSetup = fileEncryptor.getColumnSetup(column.getPath(), false, cIndex);
if (columnEncryptionSetup.isEncrypted()) {
bloomFilterEncryptor = columnEncryptionSetup.getMetaDataEncryptor();
int columnOrdinal = columnEncryptionSetup.getOrdinal();
bloomFilterHeaderAAD = AesCipher.createModuleAAD(fileEncryptor.getFileAAD(), ModuleType.BloomFilterHeader,
block.getOrdinal(), columnOrdinal, -1);
bloomFilterBitsetAAD = AesCipher.createModuleAAD(fileEncryptor.getFileAAD(), ModuleType.BloomFilterBitset,
block.getOrdinal(), columnOrdinal, -1);
}
}
Util.writeBloomFilterHeader(ParquetMetadataConverter.toBloomFilterHeader(bloomFilter), out,
bloomFilterEncryptor, bloomFilterHeaderAAD);
ByteArrayOutputStream tempOutStream = new ByteArrayOutputStream();
bloomFilter.writeTo(tempOutStream);
byte[] serializedBitset = tempOutStream.toByteArray();
if (null != bloomFilterEncryptor) {
serializedBitset = bloomFilterEncryptor.encrypt(serializedBitset, bloomFilterBitsetAAD);
}
out.write(serializedBitset);
}
}
}
private static void serializeFooter(ParquetMetadata footer, PositionOutputStream out,
InternalFileEncryptor fileEncryptor, ParquetMetadataConverter metadataConverter) throws IOException {
// Unencrypted file
if (null == fileEncryptor) {
long footerIndex = out.getPos();
org.apache.parquet.format.FileMetaData parquetMetadata = metadataConverter.toParquetMetadata(CURRENT_VERSION, footer);
writeFileMetaData(parquetMetadata, out);
LOG.debug("{}: footer length = {}" , out.getPos(), (out.getPos() - footerIndex));
BytesUtils.writeIntLittleEndian(out, (int) (out.getPos() - footerIndex));
out.write(MAGIC);
return;
}
org.apache.parquet.format.FileMetaData parquetMetadata =
metadataConverter.toParquetMetadata(CURRENT_VERSION, footer, fileEncryptor);
// Encrypted file with plaintext footer
if (!fileEncryptor.isFooterEncrypted()) {
long footerIndex = out.getPos();
parquetMetadata.setEncryption_algorithm(fileEncryptor.getEncryptionAlgorithm());
// create footer signature (nonce + tag of encrypted footer)
byte[] footerSigningKeyMetaData = fileEncryptor.getFooterSigningKeyMetaData();
if (null != footerSigningKeyMetaData) {
parquetMetadata.setFooter_signing_key_metadata(footerSigningKeyMetaData);
}
ByteArrayOutputStream tempOutStream = new ByteArrayOutputStream();
writeFileMetaData(parquetMetadata, tempOutStream);
byte[] serializedFooter = tempOutStream.toByteArray();
byte[] footerAAD = AesCipher.createFooterAAD(fileEncryptor.getFileAAD());
byte[] encryptedFooter = fileEncryptor.getSignedFooterEncryptor().encrypt(serializedFooter, footerAAD);
byte[] signature = new byte[AesCipher.NONCE_LENGTH + AesCipher.GCM_TAG_LENGTH];
System.arraycopy(encryptedFooter, ModuleCipherFactory.SIZE_LENGTH, signature, 0, AesCipher.NONCE_LENGTH); // copy Nonce
System.arraycopy(encryptedFooter, encryptedFooter.length - AesCipher.GCM_TAG_LENGTH,
signature, AesCipher.NONCE_LENGTH, AesCipher.GCM_TAG_LENGTH); // copy GCM Tag
out.write(serializedFooter);
out.write(signature);
LOG.debug("{}: footer and signature length = {}" , out.getPos(), (out.getPos() - footerIndex));
BytesUtils.writeIntLittleEndian(out, (int) (out.getPos() - footerIndex));
out.write(MAGIC);
return;
}
// Encrypted file with encrypted footer
long cryptoFooterIndex = out.getPos();
writeFileCryptoMetaData(fileEncryptor.getFileCryptoMetaData(), out);
byte[] footerAAD = AesCipher.createFooterAAD(fileEncryptor.getFileAAD());
writeFileMetaData(parquetMetadata, out, fileEncryptor.getFooterEncryptor(), footerAAD);
int combinedMetaDataLength = (int)(out.getPos() - cryptoFooterIndex);
LOG.debug("{}: crypto metadata and footer length = {}" , out.getPos(), combinedMetaDataLength);
BytesUtils.writeIntLittleEndian(out, combinedMetaDataLength);
out.write(EFMAGIC);
}
public ParquetMetadata getFooter() {
Preconditions.checkState(state == STATE.ENDED, "Cannot return unfinished footer.");
return footer;
}
/**
* Given a list of metadata files, merge them into a single ParquetMetadata
* Requires that the schemas be compatible, and the extraMetadata be exactly equal.
* @param files a list of files to merge metadata from
* @param conf a configuration
* @return merged parquet metadata for the files
* @throws IOException if there is an error while writing
* @deprecated metadata files are not recommended and will be removed in 2.0.0
*/
@Deprecated
public static ParquetMetadata mergeMetadataFiles(List files, Configuration conf) throws IOException {
return mergeMetadataFiles(files, conf, new StrictKeyValueMetadataMergeStrategy());
}
/**
* Given a list of metadata files, merge them into a single ParquetMetadata
* Requires that the schemas be compatible, and the extraMetadata be exactly equal.
* @param files a list of files to merge metadata from
* @param conf a configuration
* @param keyValueMetadataMergeStrategy strategy to merge values for same key, if there are multiple
* @return merged parquet metadata for the files
* @throws IOException if there is an error while writing
* @deprecated metadata files are not recommended and will be removed in 2.0.0
*/
@Deprecated
public static ParquetMetadata mergeMetadataFiles(List files, Configuration conf,
KeyValueMetadataMergeStrategy keyValueMetadataMergeStrategy) throws IOException {
Preconditions.checkArgument(!files.isEmpty(), "Cannot merge an empty list of metadata");
GlobalMetaData globalMetaData = null;
List blocks = new ArrayList();
for (Path p : files) {
ParquetMetadata pmd = ParquetFileReader.readFooter(conf, p, ParquetMetadataConverter.NO_FILTER);
FileMetaData fmd = pmd.getFileMetaData();
globalMetaData = mergeInto(fmd, globalMetaData, true);
blocks.addAll(pmd.getBlocks());
}
// collapse GlobalMetaData into a single FileMetaData, which will throw if they are not compatible
return new ParquetMetadata(globalMetaData.merge(keyValueMetadataMergeStrategy), blocks);
}
/**
* Given a list of metadata files, merge them into a single metadata file.
* Requires that the schemas be compatible, and the extraMetaData be exactly equal.
* This is useful when merging 2 directories of parquet files into a single directory, as long
* as both directories were written with compatible schemas and equal extraMetaData.
* @param files a list of files to merge metadata from
* @param outputPath path to write merged metadata to
* @param conf a configuration
* @throws IOException if there is an error while reading or writing
* @deprecated metadata files are not recommended and will be removed in 2.0.0
*/
@Deprecated
public static void writeMergedMetadataFile(List files, Path outputPath, Configuration conf) throws IOException {
ParquetMetadata merged = mergeMetadataFiles(files, conf);
writeMetadataFile(outputPath, merged, outputPath.getFileSystem(conf));
}
/**
* writes a _metadata and _common_metadata file
* @param configuration the configuration to use to get the FileSystem
* @param outputPath the directory to write the _metadata file to
* @param footers the list of footers to merge
* @throws IOException if there is an error while writing
* @deprecated metadata files are not recommended and will be removed in 2.0.0
*/
@Deprecated
public static void writeMetadataFile(Configuration configuration, Path outputPath, List
