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From "Abhishek Singh Chouhan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-14352) Replication is terribly slow with WAL compression
Date Tue, 01 Sep 2015 07:07:45 GMT

     [ https://issues.apache.org/jira/browse/HBASE-14352?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Abhishek Singh Chouhan updated HBASE-14352:
-------------------------------------------
    Attachment: size_of_log_queue.png

Graph of Size of log queue without and with WAL compression enabled. It takes much more time
for the queue to clear up with WAL compression turned on.

> 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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