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https://issues.apache.org/jira/browse/PHOENIX-3260?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Samarth Jain resolved PHOENIX-3260.
-----------------------------------
Resolution: Fixed
Fix Version/s: 4.8.1
> MetadataRegionObserver.postOpen() can prevent region server from shutting
> down for a long duration
> --------------------------------------------------------------------------------------------------
>
> Key: PHOENIX-3260
> URL: https://issues.apache.org/jira/browse/PHOENIX-3260
> Project: Phoenix
> Issue Type: Bug
> Reporter: Samarth Jain
> Assignee: Samarth Jain
> Fix For: 4.8.1
>
> Attachments: PHOENIX-3260.patch
>
>
> On my local setup, I noticed that invoking ./stop-hbase.sh wasn't able to
> shutdown the hbase cluster for a long time. Doing a jstack revealed that the
> thread being created in MetadataRegionObserver.postOpen() is not assigned as
> daemon. This could prevent the region server hosting the SYSTEM.CATALOG table
> from shutting down for a long duration.
> Stacktrace of the hung thread:
> {code}
> "Thread-87" prio=5 tid=0x00007ffbd699d800 nid=0x1b607 waiting on condition
> [0x0000000120446000]
> java.lang.Thread.State: TIMED_WAITING (sleeping)
> at java.lang.Thread.sleep(Native Method)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:149)
> - locked <0x00000007d1ab8140> (a
> org.apache.hadoop.hbase.client.RpcRetryingCaller)
> at org.apache.hadoop.hbase.client.HTable.get(HTable.java:833)
> at org.apache.hadoop.hbase.client.HTable.get(HTable.java:810)
> at
> org.apache.hadoop.hbase.coprocessor.CoprocessorHost$Environment$HTableWrapper.get(CoprocessorHost.java:466)
> at
> org.apache.phoenix.util.UpgradeUtil.truncateStats(UpgradeUtil.java:1226)
> at
> org.apache.phoenix.coprocessor.MetaDataRegionObserver$1.run(MetaDataRegionObserver.java:148)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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