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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.regionserver.compactions;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.regionserver.StoreConfigInformation;
/**
* Compaction configuration for a particular instance of HStore.
* Takes into account both global settings and ones set on the column family/store.
* Control knobs for default compaction algorithm:
* <p/>
* maxCompactSize - upper bound on file size to be included in minor compactions
* minCompactSize - lower bound below which compaction is selected without ratio test
* minFilesToCompact - lower bound on number of files in any minor compaction
* maxFilesToCompact - upper bound on number of files in any minor compaction
* compactionRatio - Ratio used for compaction
* minLocalityToForceCompact - Locality threshold for a store file to major compact (HBASE-11195)
* <p/>
* Set parameter as "hbase.hstore.compaction.<attribute>"
*/
@InterfaceAudience.Private
public class CompactionConfiguration {
static final Log LOG = LogFactory.getLog(CompactionConfiguration.class);
public static final String HBASE_HSTORE_COMPACTION_RATIO_KEY = "hbase.hstore.compaction.ratio";
public static final String HBASE_HSTORE_COMPACTION_RATIO_OFFPEAK_KEY =
"hbase.hstore.compaction.ratio.offpeak";
public static final String HBASE_HSTORE_COMPACTION_MIN_KEY = "hbase.hstore.compaction.min";
public static final String HBASE_HSTORE_COMPACTION_MIN_SIZE_KEY =
"hbase.hstore.compaction.min.size";
public static final String HBASE_HSTORE_COMPACTION_MAX_KEY = "hbase.hstore.compaction.max";
public static final String HBASE_HSTORE_COMPACTION_MAX_SIZE_KEY =
"hbase.hstore.compaction.max.size";
public static final String HBASE_HSTORE_OFFPEAK_END_HOUR = "hbase.offpeak.end.hour";
public static final String HBASE_HSTORE_OFFPEAK_START_HOUR = "hbase.offpeak.start.hour";
public static final String HBASE_HSTORE_MIN_LOCALITY_TO_SKIP_MAJOR_COMPACT =
"hbase.hstore.min.locality.to.skip.major.compact";
Configuration conf;
StoreConfigInformation storeConfigInfo;
private final double offPeakCompactionRatio;
/** Since all these properties can change online, they are volatile **/
private final long maxCompactSize;
private final long minCompactSize;
private final int minFilesToCompact;
private final int maxFilesToCompact;
private final double compactionRatio;
private final long throttlePoint;
private final long majorCompactionPeriod;
private final float majorCompactionJitter;
private final float minLocalityToForceCompact;
CompactionConfiguration(Configuration conf, StoreConfigInformation storeConfigInfo) {
this.conf = conf;
this.storeConfigInfo = storeConfigInfo;
maxCompactSize = conf.getLong(HBASE_HSTORE_COMPACTION_MAX_SIZE_KEY, Long.MAX_VALUE);
minCompactSize = conf.getLong(HBASE_HSTORE_COMPACTION_MIN_SIZE_KEY,
storeConfigInfo.getMemstoreFlushSize());
minFilesToCompact = Math.max(2, conf.getInt(HBASE_HSTORE_COMPACTION_MIN_KEY,
/*old name*/ conf.getInt("hbase.hstore.compactionThreshold", 3)));
maxFilesToCompact = conf.getInt(HBASE_HSTORE_COMPACTION_MAX_KEY, 10);
compactionRatio = conf.getFloat(HBASE_HSTORE_COMPACTION_RATIO_KEY, 1.2F);
offPeakCompactionRatio = conf.getFloat(HBASE_HSTORE_COMPACTION_RATIO_OFFPEAK_KEY, 5.0F);
throttlePoint = conf.getLong("hbase.regionserver.thread.compaction.throttle",
2 * maxFilesToCompact * storeConfigInfo.getMemstoreFlushSize());
majorCompactionPeriod = conf.getLong(HConstants.MAJOR_COMPACTION_PERIOD, 1000*60*60*24*7);
// Make it 0.5 so jitter has us fall evenly either side of when the compaction should run
majorCompactionJitter = conf.getFloat("hbase.hregion.majorcompaction.jitter", 0.50F);
minLocalityToForceCompact = conf.getFloat(HBASE_HSTORE_MIN_LOCALITY_TO_SKIP_MAJOR_COMPACT, 0f);
LOG.info(this);
}
@Override
public String toString() {
return String.format(
"size [%d, %d); files [%d, %d); ratio %f; off-peak ratio %f; throttle point %d;"
+ " major period %d, major jitter %f, min locality to compact %f",
minCompactSize,
maxCompactSize,
minFilesToCompact,
maxFilesToCompact,
compactionRatio,
offPeakCompactionRatio,
throttlePoint,
majorCompactionPeriod,
majorCompactionJitter,
minLocalityToForceCompact);
}
/**
* @return lower bound below which compaction is selected without ratio test
*/
public long getMinCompactSize() {
return minCompactSize;
}
/**
* @return upper bound on file size to be included in minor compactions
*/
public long getMaxCompactSize() {
return maxCompactSize;
}
/**
* @return upper bound on number of files to be included in minor compactions
*/
public int getMinFilesToCompact() {
return minFilesToCompact;
}
/**
* @return upper bound on number of files to be included in minor compactions
*/
public int getMaxFilesToCompact() {
return maxFilesToCompact;
}
/**
* @return Ratio used for compaction
*/
public double getCompactionRatio() {
return compactionRatio;
}
/**
* @return Off peak Ratio used for compaction
*/
public double getCompactionRatioOffPeak() {
return offPeakCompactionRatio;
}
/**
* @return ThrottlePoint used for classifying small and large compactions
*/
public long getThrottlePoint() {
return throttlePoint;
}
/**
* @return Major compaction period from compaction.
* Major compactions are selected periodically according to this parameter plus jitter
*/
public long getMajorCompactionPeriod() {
return majorCompactionPeriod;
}
/**
* @return Major the jitter fraction, the fraction within which the major compaction
* period is randomly chosen from the majorCompactionPeriod in each store.
*/
public float getMajorCompactionJitter() {
return majorCompactionJitter;
}
/**
* @return Block locality ratio, the ratio at which we will include old regions with a single
* store file for major compaction. Used to improve block locality for regions that
* haven't had writes in a while but are still being read.
*/
public float getMinLocalityToForceCompact() {
return minLocalityToForceCompact;
}
}