Samarth Jain created PHOENIX-3260:
-------------------------------------
Summary: 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
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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