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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14352) Replication is terribly slow with WAL compression
Date Tue, 01 Sep 2015 11:43:46 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14725254#comment-14725254
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ramkrishna.s.vasudevan commented on HBASE-14352:
------------------------------------------------

Got it. Thanks for the explanation.

> Replication is terribly slow with WAL compression
> -------------------------------------------------
>
>                 Key: HBASE-14352
>                 URL: https://issues.apache.org/jira/browse/HBASE-14352
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.13
>            Reporter: Abhishek Singh Chouhan
>         Attachments: age_of_last_shipped.png, size_of_log_queue.png
>
>
> For the same load, replication with WAL compression enabled is almost 6x slower than
with compression turned off. Age of last shipped operation is also correspondingly much higher
when compression is turned on. 
> By observing Size of log queue we can see that it is taking too much time for the queue
to clear up.
> Attaching corresponding graphs.



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