Yu Li created HBASE-15931:
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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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