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https://issues.apache.org/jira/browse/HBASE-14188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ramkrishna.s.vasudevan updated HBASE-14188:
-------------------------------------------
    Attachment: HBASE-14188.patch

Patch that avoids setSequenceId() and other minor improvements.
After this patch the setSequenceId() no longer appears in the profiler.
Previously before the HBASE-11425 changes we were calling this setSequenceId 
directly on the Keyvalue object. 

> 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
>         Attachments: HBASE-14188.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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