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HBASE-23887 Bug fix heavyEvictionMbSizeLimit (AdaptiveLRU cache) #2957

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merged 4 commits into from
Feb 15, 2021
Merged

HBASE-23887 Bug fix heavyEvictionMbSizeLimit (AdaptiveLRU cache) #2957

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2544bc1
bug fix heavyEvictionMbSizeLimit
pustota2009 Feb 14, 2021
7ffac64
fix javadoc
pustota2009 Feb 14, 2021
1ec7fc9
Update LruAdaptiveBlockCache.java
pustota2009 Feb 14, 2021
aeb8149
Update LruAdaptiveBlockCache.java
pustota2009 Feb 14, 2021
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8 changes: 7 additions & 1 deletion hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruAdaptiveBlockCache.java
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Original file line number Diff line number Diff line change
Expand Up @@ -388,6 +388,12 @@ public LruAdaptiveBlockCache(long maxSize, long blockSize, Configuration conf) {
* @param singleFactor percentage of total size for single-access blocks
* @param multiFactor percentage of total size for multiple-access blocks
* @param memoryFactor percentage of total size for in-memory blocks
* @param hardLimitFactor hard capacity limit
* @param forceInMemory in-memory hfile's data block has higher priority when evicting
* @param maxBlockSize maximum block size for caching
* @param heavyEvictionCountLimit when starts AdaptiveLRU algoritm work
* @param heavyEvictionMbSizeLimit how many bytes desirable putting into BlockCache
* @param heavyEvictionOverheadCoefficient how aggressive AdaptiveLRU will reduce GC
*/
public LruAdaptiveBlockCache(long maxSize, long blockSize, boolean evictionThread,
int mapInitialSize, float mapLoadFactor, int mapConcurrencyLevel,
Expand Down Expand Up @@ -434,7 +440,7 @@ public LruAdaptiveBlockCache(long maxSize, long blockSize, boolean evictionThrea

// check the bounds
this.heavyEvictionCountLimit = Math.max(heavyEvictionCountLimit, 0);
this.heavyEvictionMbSizeLimit = Math.max(heavyEvictionCountLimit, 1);
this.heavyEvictionMbSizeLimit = Math.max(heavyEvictionMbSizeLimit, 1);
this.cacheDataBlockPercent = 100;
heavyEvictionOverheadCoefficient = Math.min(heavyEvictionOverheadCoefficient, 1.0f);
heavyEvictionOverheadCoefficient = Math.max(heavyEvictionOverheadCoefficient, 0.001f);
Expand Down