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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14188) Read path optimizations after HBASE-11425 profiling
Date Thu, 06 Aug 2015 15:08:06 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14660143#comment-14660143
] 

Hudson commented on HBASE-14188:
--------------------------------

FAILURE: Integrated in HBase-TRUNK #6701 (See [https://builds.apache.org/job/HBase-TRUNK/6701/])
HBASE-14188 - Read path optimizations after HBASE-11425 profiling (Ram) (ramkrishna: rev 7a9e10dc11877420c53245c403897d746bebc077)
* hbase-common/src/main/java/org/apache/hadoop/hbase/OffheapKeyValue.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.java
* hbase-common/src/test/java/org/apache/hadoop/hbase/TestOffheapKeyValue.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/filter/FilterAllFilter.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/SizeCachedNoTagsKeyValue.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/SizeCachedKeyValue.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/nio/MultiByteBuff.java


> Read path optimizations after HBASE-11425 profiling
> ---------------------------------------------------
>
>                 Key: HBASE-14188
>                 URL: https://issues.apache.org/jira/browse/HBASE-14188
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Scanners
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 2.0.0
>
>         Attachments: HBASE-14188.patch, HBASE-14188_1.patch, HBASE-14188_2.patch, setSeqId.png
>
>
> This subtask deals with some improvments that can be done in the read path (scans) after
the changes for HBASE-11425 went in.
> -> Avoid CellUtil.setSequenceId in hot path.
> -> Use BBUtils in the MultibyteBuff.
> -> Use ByteBuff.skip() API in HFileReader rather than MultiByteBuff.position().



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