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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9501) Provide throttling for replication
Date Tue, 11 Feb 2014 02:37:23 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13897469#comment-13897469
] 

Hudson commented on HBASE-9501:
-------------------------------

SUCCESS: Integrated in HBase-TRUNK #4906 (See [https://builds.apache.org/job/HBase-TRUNK/4906/])
HBASE-9501 Provide throttling for replication (Feng Honghua via JD) (jdcryans: rev 1566923)
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSource.java
* /hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationThrottler.java
* /hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicationThrottler.java


> Provide throttling for replication
> ----------------------------------
>
>                 Key: HBASE-9501
>                 URL: https://issues.apache.org/jira/browse/HBASE-9501
>             Project: HBase
>          Issue Type: Improvement
>          Components: Replication
>            Reporter: Feng Honghua
>            Assignee: Feng Honghua
>             Fix For: 0.98.1, 0.99.0
>
>         Attachments: HBASE-9501-trunk_v0.patch, HBASE-9501-trunk_v1.patch, HBASE-9501-trunk_v2.patch,
HBASE-9501-trunk_v3.patch, HBASE-9501-trunk_v4.patch
>
>
> When we disable a peer for a time of period, and then enable it, the ReplicationSource
in master cluster will push the accumulated hlog entries during the disabled interval to the
re-enabled peer cluster at full speed.
> If the bandwidth of the two clusters is shared by different applications, the push at
full speed for replication can use all the bandwidth and severely influence other applications.
> Though there are two config replication.source.size.capacity and replication.source.nb.capacity
to tweak the batch size each time a push delivers, but if decrease these two configs, the
number of pushes increase, and all these pushes proceed continuously without pause. And no
obvious help for the bandwidth throttling.
> From bandwidth-sharing and push-speed perspective, it's more reasonable to provide a
bandwidth up limit for each peer push channel, and within that limit, peer can choose a big
batch size for each push for bandwidth efficiency.
> Any opinion?



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