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https://issues.apache.org/jira/browse/HBASE-14352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14725243#comment-14725243
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Abhishek Singh Chouhan commented on HBASE-14352:
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The graph is of two back to back workloads and shows point in time size of log
queue of a particular host(each coloured line is a different host). When
replication is complete, it goes back to 0.For the earlier load you can see the
size of log queue going up and then coming down,at the point it comes back to
0, we have completely replicated all the edits. For the latter workload you can
see that it is very spread out (it took too much time for the queue to clear
up).
> 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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