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From "Yu Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14969) Add throughput controller for flush
Date Fri, 22 Jan 2016 10:08:39 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15112243#comment-15112243

Yu Li commented on HBASE-14969:

Checking UT failures:
* TestImportExport.testDurability:
java.util.concurrent.ExecutionException: java.lang.RuntimeException: Error while running command
to get file permissions :
ExitCodeException exitCode=127: /bin/ls: error while loading shared libraries: libc.so.6:
failed to map segment from shared object:
Permission denied
* TestImportExport.testWithMultipleDeleteFamilyMarkersOfSameRowSameFamily:
java.io.IOException: java.util.concurrent.ExecutionException: ExitCodeException exitCode=137:

	at java.util.concurrent.FutureTask.report(FutureTask.java:122)
	at java.util.concurrent.FutureTask.get(FutureTask.java:188)

Both have nothing to do with changes here.

> 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.branch-1.patch, HBASE-14969.patch, HBASE-14969_v10.patch,
HBASE-14969_v2.patch, HBASE-14969_v3.patch, HBASE-14969_v4.patch, HBASE-14969_v5.patch, HBASE-14969_v6.patch,
HBASE-14969_v9.patch, fd78628_9909808_compat_report.html, 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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