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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-15058) NamespaceAuditor should account for unsuccessful split which initially passes quota check
Date Wed, 30 Dec 2015 19:23:49 GMT
Ted Yu created HBASE-15058:
------------------------------

             Summary: NamespaceAuditor should account for unsuccessful split 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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