org.apache.parquet.proto.ProtoParquetOutputFormat Maven / Gradle / Ivy
/*
* 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.proto;
import com.google.protobuf.Message;
import com.google.protobuf.MessageOrBuilder;
import org.apache.hadoop.mapreduce.Job;
import org.apache.parquet.hadoop.ParquetOutputFormat;
import org.apache.parquet.hadoop.util.ContextUtil;
/**
* A Hadoop {@link org.apache.hadoop.mapreduce.OutputFormat} for Protocol Buffer Parquet files.
*
* Usage:
*
* final Job job = new Job(conf, "Parquet writing job");
* job.setOutputFormatClass(ProtoParquetOutputFormat.class);
* ProtoParquetOutputFormat.setOutputPath(job, parquetPath);
* ProtoParquetOutputFormat.setProtobufClass(job, YourProtocolbuffer.class);
*
*/
public class ProtoParquetOutputFormat extends ParquetOutputFormat {
public static void setProtobufClass(Job job, Class protoClass) {
ProtoWriteSupport.setSchema(ContextUtil.getConfiguration(job), protoClass);
}
public ProtoParquetOutputFormat(Class msg) {
super(new ProtoWriteSupport(msg));
}
public ProtoParquetOutputFormat() {
super(new ProtoWriteSupport());
}
}