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https://issues.apache.org/jira/browse/HBASE-11331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14129511#comment-14129511
 ] 

Hudson commented on HBASE-11331:
--------------------------------

SUCCESS: Integrated in HBase-1.0 #171 (See 
[https://builds.apache.org/job/HBase-1.0/171/])
HBASE-11331 [blockcache] lazy block decompression (ndimiduk: rev 
4d51cf0ee7d2a508569bd96630eb6d2d9afd6493)
* 
hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/regionserver/BlockCacheTmpl.jamon
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlock.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFile.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestChecksum.java
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileEncryption.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV2.java
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestCacheConfig.java
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileWriterV2.java
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestForceCacheImportantBlocks.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CacheConfig.java
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlockIndex.java
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestCacheOnWrite.java
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlockCompatibility.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileContext.java
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileWriterV3.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderV2.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruBlockCache.java
* 
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestLazyDataBlockDecompression.java


> [blockcache] lazy block decompression
> -------------------------------------
>
>                 Key: HBASE-11331
>                 URL: https://issues.apache.org/jira/browse/HBASE-11331
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>             Fix For: 2.0.0, 0.98.7, 0.99.1
>
>         Attachments: HBASE-11331.00.patch, HBASE-11331.01.patch, 
> HBASE-11331.02.patch, HBASE-11331.03.patch, HBASE-11331.04.patch, 
> HBASE-11331.05-0.98.patch, HBASE-11331.05.patch, HBASE-11331.06-0.98.patch, 
> HBASE-11331.06.patch, HBASE-11331.07-0.98.patch, HBASE-11331.07.patch, 
> HBASE-11331LazyBlockDecompressperfcompare.pdf, 
> hbase-hbase-master-hor17n36.gq1.ygridcore.net.log, lazy-decompress.02.0.pdf, 
> lazy-decompress.02.1.json, lazy-decompress.02.1.pdf, v03-20g-045g-false.pdf, 
> v03-20g-045g-true-16h.pdf, v03-20g-045g-true.pdf
>
>
> Maintaining data in its compressed form in the block cache will greatly 
> increase our effective blockcache size and should show a meaning improvement 
> in cache hit rates in well designed applications. The idea here is to lazily 
> decompress/decrypt blocks when they're consumed, rather than as soon as 
> they're pulled off of disk.
> This is related to but less invasive than HBASE-8894.



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