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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14969) Add throughput controller for flush
Date Sun, 17 Jan 2016 13:14:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15103724#comment-15103724

Duo Zhang commented on HBASE-14969:

My only concern is that this will require user to modify their configuration if use PressureAwareCompressionThroughputController.
Yes this is a problem. I think we could map {{org.apache.hadoop.hbase.regionserver.compactions.PressureAwareCompressionThroughputController}}
to {{org.apache.hadoop.hbase.regionserver.throttle.PressureAwareCompressionThroughputController}}
in {{CompactionThroughputControllerFactory}}. And also for {{NoLimitCompactionThroughputController}}.

Is it possible we add any separate logic in setup/start/finish method for flush and compaction
no-limit-controller in the future?
I think 'no limit' itself does not have other meanings. People could introduce other {{ThroughputController}}
if they want(just use a different name).

And I left some comments on rb, only small changes.


> Add throughput controller for flush
> -----------------------------------
>                 Key: HBASE-14969
>                 URL: https://issues.apache.org/jira/browse/HBASE-14969
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Yu Li
>            Assignee: Yu Li
>             Fix For: 2.0.0, 1.3.0
>         Attachments: HBASE-14969.patch, HBASE-14969_v2.patch, HBASE-14969_v3.patch, HBASE-14969_v4.patch,
HBASE-14969_v5.patch, HBASE-14969_v6.patch, load-nothrottling.log, load-throttling.log
> In HBASE-8329 we added a throughput controller for compaction, to avoid spike caused
by huge IO pressure like network/disk overflow. However, even with this control on, we are
still observing disk utils near 100%, and by analysis we think this is caused by flush, especially
when we increase the setting of {{hbase.hstore.flusher.count}}
> In this JIRA, we propose to add throughput control feature for flush, as a supplement
of HBASE-8329 to better control IO pressure.

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