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https://issues.apache.org/jira/browse/HBASE-19357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16282406#comment-16282406
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Hudson commented on HBASE-19357:
--------------------------------
FAILURE: Integrated in Jenkins build HBase-Trunk_matrix #4185 (See
[https://builds.apache.org/job/HBase-Trunk_matrix/4185/])
HBASE-19357 Bucket cache no longer L2 for LRU cache. (anoopsamjohn: rev
ba4f9f834948e6f042e771ae5ee016610afe928c)
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestCacheConfig.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/AccessController.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperImpl.java
* (edit)
hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestColumnFamilyDescriptorBuilder.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHeapMemoryManager.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruBlockCache.java
* (edit) hbase-common/src/main/resources/hbase-default.xml
* (edit)
hbase-external-blockcache/src/main/java/org/apache/hadoop/hbase/io/hfile/MemcachedBlockCache.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestCacheOnWrite.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/bucket/TestBucketCache.java
* (edit)
hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestImmutableHColumnDescriptor.java
* (edit)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/ColumnFamilyDescriptor.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/InclusiveCombinedBlockCache.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HeapMemoryManager.java
* (edit)
hbase-client/src/main/java/org/apache/hadoop/hbase/HColumnDescriptor.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/BlockCache.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.java
* (edit)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/TableDescriptorBuilder.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CacheConfig.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/util/FSTableDescriptors.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestLruBlockCache.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/io/util/MemorySizeUtil.java
* (edit)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/ColumnFamilyDescriptorBuilder.java
> Bucket cache no longer L2 for LRU cache
> ---------------------------------------
>
> Key: HBASE-19357
> URL: https://issues.apache.org/jira/browse/HBASE-19357
> Project: HBase
> Issue Type: Sub-task
> Reporter: Anoop Sam John
> Assignee: Anoop Sam John
> Fix For: 2.0.0-beta-1
>
> Attachments: HBASE-19357.patch, HBASE-19357.patch,
> HBASE-19357_V2.patch, HBASE-19357_V3.patch, HBASE-19357_V3.patch
>
>
> When Bucket cache is used, by default we dont configure it as an L2 cache
> alone. The default setting is combined mode ON where the data blocks to
> Bucket cache and index/bloom blocks go to LRU cache. But there is a way to
> turn this off and make LRU as L1 and Bucket cache as a victim handler for L1.
> It will be just L2.
> After the off heap read path optimization Bucket cache is no longer slower
> compared to L1. We have test results on data sizes from 12 GB. The Alibaba
> use case was also with 12 GB and they have observed a ~30% QPS improve over
> the LRU cache.
> This issue is to remove the option for combined mode = false. So when Bucket
> cache is in use, data blocks will go to it only and LRU will get only index
> /meta/bloom blocks. Bucket cache will no longer be configured as a victim
> handler for LRU.
> Note : WHen external cache is in use, there only the L1 L2 thing comes. LRU
> will be L1 and external cache act as its L2. That make full sense.
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