[jira] [Commented] (HBASE-9501) No throttling for replication

["Jean-Marc Spaggiari (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-9501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13764221#comment-13764221 ] 

Jean-Marc Spaggiari commented on HBASE-9501:
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I like the idea. It's like in HDFS, there is some throttle option for the under replicated blocks replication...
                
> No 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
>
> 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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