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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.hadoop.hbase.mob;
import org.apache.hadoop.hbase.ArrayBackedTag;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.Tag;
import org.apache.hadoop.hbase.TagType;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.yetus.audience.InterfaceAudience;
/**
* The constants used in mob.
*/
@InterfaceAudience.Public
public final class MobConstants {
public static final String MOB_SCAN_RAW = "hbase.mob.scan.raw";
public static final String MOB_CACHE_BLOCKS = "hbase.mob.cache.blocks";
public static final String MOB_SCAN_REF_ONLY = "hbase.mob.scan.ref.only";
public static final String EMPTY_VALUE_ON_MOBCELL_MISS = "empty.value.on.mobcell.miss";
public static final String MOB_FILE_CACHE_SIZE_KEY = "hbase.mob.file.cache.size";
public static final int DEFAULT_MOB_FILE_CACHE_SIZE = 1000;
public static final String MOB_DIR_NAME = "mobdir";
public static final String MOB_REGION_NAME = ".mob";
public static final byte[] MOB_REGION_NAME_BYTES = Bytes.toBytes(MOB_REGION_NAME);
public static final String MOB_CLEANER_PERIOD = "hbase.master.mob.cleaner.period";
public static final String DEPRECATED_MOB_CLEANER_PERIOD = "hbase.master.mob.ttl.cleaner.period";
public static final int DEFAULT_MOB_CLEANER_PERIOD = 24 * 60 * 60; // one day
public static final String MOB_CACHE_EVICT_PERIOD = "hbase.mob.cache.evict.period";
public static final String MOB_CACHE_EVICT_REMAIN_RATIO = "hbase.mob.cache.evict.remain.ratio";
public static final Tag MOB_REF_TAG =
new ArrayBackedTag(TagType.MOB_REFERENCE_TAG_TYPE, HConstants.EMPTY_BYTE_ARRAY);
public static final String MOB_CLEANER_BATCH_SIZE_UPPER_BOUND =
"hbase.master.mob.cleaner.batch.size.upper.bound";
public static final int DEFAULT_MOB_CLEANER_BATCH_SIZE_UPPER_BOUND = 10000;
public static final float DEFAULT_EVICT_REMAIN_RATIO = 0.5f;
public static final long DEFAULT_MOB_CACHE_EVICT_PERIOD = 3600L;
public final static String TEMP_DIR_NAME = ".tmp";
/**
* The max number of a MOB table regions that is allowed in a batch of the mob compaction. By
* setting this number to a custom value, users can control the overall effect of a major
* compaction of a large MOB-enabled table.
*/
public static final String MOB_MAJOR_COMPACTION_REGION_BATCH_SIZE =
"hbase.mob.major.compaction.region.batch.size";
/**
* Default is 0 - means no limit - all regions of a MOB table will be compacted at once
*/
public static final int DEFAULT_MOB_MAJOR_COMPACTION_REGION_BATCH_SIZE = 0;
/**
* The period that MobCompactionChore runs. The unit is second. The default value is one week.
*/
public static final String MOB_COMPACTION_CHORE_PERIOD = "hbase.mob.compaction.chore.period";
public static final int DEFAULT_MOB_COMPACTION_CHORE_PERIOD = 24 * 60 * 60 * 7; // a week
public static final String MOB_COMPACTOR_CLASS_KEY = "hbase.mob.compactor.class";
/**
* Mob compaction type: "full", "optimized" "full" - run full major compaction (during migration)
* "optimized" - optimized version for use case with infrequent updates/deletes
*/
public final static String OPTIMIZED_MOB_COMPACTION_TYPE = "optimized";
public final static String FULL_MOB_COMPACTION_TYPE = "full";
public final static String MOB_COMPACTION_TYPE_KEY = "hbase.mob.compaction.type";
public final static String DEFAULT_MOB_COMPACTION_TYPE = FULL_MOB_COMPACTION_TYPE;
/**
* Maximum size of a MOB compaction selection
*/
public static final String MOB_COMPACTION_MAX_FILE_SIZE_KEY =
"hbase.mob.compactions.max.file.size";
/**
* Default maximum selection size = 1GB
*/
public static final long DEFAULT_MOB_COMPACTION_MAX_FILE_SIZE = 1024 * 1024 * 1024;
/**
* Use this configuration option with caution, only during upgrade procedure to handle missing MOB
* cells during compaction.
*/
public static final String MOB_UNSAFE_DISCARD_MISS_KEY = "hbase.unsafe.mob.discard.miss";
public static final boolean DEFAULT_MOB_DISCARD_MISS = false;
/**
* Minimum MOB file age to archive, default (3600000 - 1h)
*/
public static final String MIN_AGE_TO_ARCHIVE_KEY = "hbase.mob.min.age.archive";
public static final long DEFAULT_MIN_AGE_TO_ARCHIVE = 3600000; // 1h
/**
* Old configuration parameters (obsolete)
*/
public final static String BULKLOAD_DIR_NAME = ".bulkload";
public final static byte[] MOB_TABLE_LOCK_SUFFIX = Bytes.toBytes(".mobLock");
public final static String EMPTY_STRING = "";
/**
* If the size of a mob file is less than this value, it's regarded as a small file and needs to
* be merged in mob compaction. The default value is 1280MB.
*/
public static final String MOB_COMPACTION_MERGEABLE_THRESHOLD =
"hbase.mob.compaction.mergeable.threshold";
public static final long DEFAULT_MOB_COMPACTION_MERGEABLE_THRESHOLD = 10 * 128 * 1024 * 1024;
/**
* The max number of del files that is allowed in the mob file compaction. In the mob compaction,
* when the number of existing del files is larger than this value, they are merged until number
* of del files is not larger this value. The default value is 3.
*/
public static final String MOB_DELFILE_MAX_COUNT = "hbase.mob.delfile.max.count";
public static final int DEFAULT_MOB_DELFILE_MAX_COUNT = 3;
/**
* The max number of the mob files that is allowed in a batch of the mob compaction. The mob
* compaction merges the small mob files to bigger ones. If the number of the small files is very
* large, it could lead to a "too many opened file handlers" in the merge. And the merge has to be
* split into batches. This value limits the number of mob files that are selected in a batch of
* the mob compaction. The default value is 100. Default is 0 - means no limit - all regions of a
* MOB table will be compacted at once
*/
public static final String MOB_COMPACTION_BATCH_SIZE = "hbase.mob.compaction.batch.size";
public static final int DEFAULT_MOB_COMPACTION_BATCH_SIZE = 100;
public static final String MOB_COMPACTION_THREADS_MAX = "hbase.mob.compaction.threads.max";
public static final int DEFAULT_MOB_COMPACTION_THREADS_MAX = 1;
private MobConstants() {
}
}