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https://issues.apache.org/jira/browse/HBASE-4027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13070845#comment-13070845
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jirapos...@reviews.apache.org commented on HBASE-4027:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/1191/
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Review request for hbase and Todd Lipcon.


Summary
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Uploading slabcachepatchv4 to review for Li Pi.


This addresses bug HBASE-4027.
    https://issues.apache.org/jira/browse/HBASE-4027


Diffs
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  conf/hbase-env.sh 2d55d27 
  pom.xml 729dc37 
  src/main/java/org/apache/hadoop/hbase/io/hfile/DoubleBlockCache.java 
PRE-CREATION 
  src/main/java/org/apache/hadoop/hbase/io/hfile/HFile.java 5963552 
  src/main/java/org/apache/hadoop/hbase/io/hfile/MetaSlab.java PRE-CREATION 
  src/main/java/org/apache/hadoop/hbase/io/hfile/SingleSizeCache.java 
PRE-CREATION 
  src/main/java/org/apache/hadoop/hbase/io/hfile/SlabCache.java PRE-CREATION 
  src/main/java/org/apache/hadoop/hbase/regionserver/StoreFile.java b600020 
  src/test/java/org/apache/hadoop/hbase/io/hfile/TestSingleSlabCache.java 
PRE-CREATION 
  src/test/java/org/apache/hadoop/hbase/io/hfile/TestSlabCache.java 
PRE-CREATION 

Diff: https://reviews.apache.org/r/1191/diff


Testing
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Thanks,

Todd



> Enable direct byte buffers LruBlockCache
> ----------------------------------------
>
>                 Key: HBASE-4027
>                 URL: https://issues.apache.org/jira/browse/HBASE-4027
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jason Rutherglen
>            Assignee: Li Pi
>            Priority: Minor
>         Attachments: slabcachepatch.diff, slabcachepatchv2.diff, 
> slabcachepatchv3.1.diff, slabcachepatchv3.2.diff, slabcachepatchv3.diff, 
> slabcachepatchv4.diff
>
>
> Java offers the creation of direct byte buffers which are allocated outside 
> of the heap.
> They need to be manually free'd, which can be accomplished using an 
> documented {{clean}} method.
> The feature will be optional.  After implementing, we can benchmark for 
> differences in speed and garbage collection observances.

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