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https://issues.apache.org/jira/browse/HBASE-14480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14943235#comment-14943235
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Hudson commented on HBASE-14480:
--------------------------------
FAILURE: Integrated in HBase-TRUNK #6873 (See
[https://builds.apache.org/job/HBase-TRUNK/6873/])
HBASE-14480 Small optimization in SingleByteBuff. (anoopsamjohn: rev
b014ba12431dc87903cd5065b14908f6a4ad458d)
* hbase-common/src/main/java/org/apache/hadoop/hbase/util/UnsafeAccess.java
* hbase-common/src/test/java/org/apache/hadoop/hbase/nio/TestSingleByteBuff.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/nio/SingleByteBuff.java
> Small optimization in SingleByteBuff
> ------------------------------------
>
> Key: HBASE-14480
> URL: https://issues.apache.org/jira/browse/HBASE-14480
> Project: HBase
> Issue Type: Sub-task
> Components: regionserver, Scanners
> Affects Versions: 2.0.0
> Reporter: Anoop Sam John
> Assignee: Anoop Sam John
> Fix For: 2.0.0
>
> Attachments: HBASE-14480.patch, HBASE-14480_V2.patch,
> HBASE-14480_V2.patch
>
>
> We do read from this using Unsafe based reads on underlying BB. The
> UnsafeAccess getters having 2 branches of code for HBB and DBB and exact
> memory offset calculation varies. We can do an optimize here. We can
> initialize the reference object and exact memory offset for Unsafe reads
> while creating the SBB. We will do doing the reads on this SBB many a times.
> Each time when we do read we can use
> Unsafe.getXXX(Object, long)
> I am able to get a slight adv of 2% on this change. Small change and worth
> getting this slight gain.
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