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From "Phil Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16652) Figure out performance difference between increment and append
Date Mon, 19 Sep 2016 09:00:31 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15502775#comment-15502775
] 

Phil Yang commented on HBASE-16652:
-----------------------------------

If I am not wrong, we have a default TimeRange in Scan so the tr will not be null. But if
the Get's range is null, the scan's tr will be null, too. So if we set Scan's default value
to null, will scan be faster too? Thanks.

> Figure out performance difference between increment and append
> --------------------------------------------------------------
>
>                 Key: HBASE-16652
>                 URL: https://issues.apache.org/jira/browse/HBASE-16652
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Heng Chen
>              Labels: performance
>         Attachments: HBASE-16652.patch, append.jfr, append_get_profile.png, increment.jfr,
increment_get_profile.png
>
>
> When do performance test in HBASE-16625,  i found it has the very big difference between
Append and Increment (append is about 37% faster than increment).
> As [~stack] mentioned in https://issues.apache.org/jira/browse/HBASE-16610?focusedCommentId=15493166&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15493166,
  append and increment has been unified in server-side,  and they looks the same in client-side.

> This issue is to figure out why the performance looks different between them.



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