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From "Yu Li (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-15931) Add log for long-running tasks in AsyncProcess
Date Wed, 01 Jun 2016 09:24:59 GMT
Yu Li created HBASE-15931:
-----------------------------

             Summary: Add log for long-running tasks in AsyncProcess
                 Key: HBASE-15931
                 URL: https://issues.apache.org/jira/browse/HBASE-15931
             Project: HBase
          Issue Type: Improvement
            Reporter: Yu Li
            Assignee: Yu Li


Currently if there's any long-tail tasks in a multi-action request like triggered by {{BufferedMutatorImpl#backgroundFlushCommits}},
we could see logging message like below
{noformat}
2016-05-31 09:36:55,461 INFO [Thread-16] org.apache.hadoop.hbase.client.AsyncProcess: #28,
waiting for some tasks to finish. Expected max=0, tasksInProgress=1
{noformat}
but there's no way to know detail of this long-tail, such as which table/region it's accessing.
This JIRA aims at adding such log for easier debugging.



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