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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15058) AssignmentManager should account for unsuccessful split correctly which initially passes quota check
Date Thu, 31 Dec 2015 13:53:49 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Yu updated HBASE-15058:
---------------------------
    Summary: AssignmentManager should account for unsuccessful split correctly which initially
passes quota check  (was: NamespaceAuditor should account for unsuccessful split which initially
passes quota check)

> AssignmentManager should account for unsuccessful split correctly which initially passes
quota check
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-15058
>                 URL: https://issues.apache.org/jira/browse/HBASE-15058
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>
> When region split doesn't pass quota check, we would see exception similar to the following:
> {code}
> 2015-12-29 16:07:33,653 INFO  [RS:0;10.21.128.189:57449-splits-1451434041585] regionserver.SplitRequest(97):
Running rollback/cleanup of failed split of np2:                     testRegionNormalizationSplitOnCluster,zzzzz,1451434045065.27cccb3fae03002b8058beef61cb7c20.;
Failed to get ok from master to split np2:testRegionNormalizationSplitOnCluster,     zzzzz,1451434045065.27cccb3fae03002b8058beef61cb7c20.
> java.io.IOException: Failed to get ok from master to split np2:testRegionNormalizationSplitOnCluster,zzzzz,1451434045065.27cccb3fae03002b8058beef61cb7c20.
>   at org.apache.hadoop.hbase.regionserver.SplitTransactionImpl.stepsBeforePONR(SplitTransactionImpl.java:345)
>   at org.apache.hadoop.hbase.regionserver.SplitTransactionImpl.createDaughters(SplitTransactionImpl.java:262)
>   at org.apache.hadoop.hbase.regionserver.SplitTransactionImpl.execute(SplitTransactionImpl.java:502)
>   at org.apache.hadoop.hbase.regionserver.SplitRequest.doSplitting(SplitRequest.java:82)
>   at org.apache.hadoop.hbase.regionserver.SplitRequest.run(SplitRequest.java:155)
>   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> {code}
> However, region split may fail for subsequent SplitTransactionPhase's in stepsBeforePONR().
> Currently there is no mechanism to rollback the update to namespace quota.
> When region split fails, NamespaceAuditor should account for the failure so that quota
bookkeeping is consistent.



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