Ted Yu created HBASE-9927:
-----------------------------
Summary: ReplicationLogCleaner#stop() calls
HConnectionManager#deleteConnection() unnecessarily
Key: HBASE-9927
URL: https://issues.apache.org/jira/browse/HBASE-9927
Project: HBase
Issue Type: Task
Reporter: Ted Yu
Priority: Minor
When inspecting log, I found the following:
{code}
2013-11-08 18:23:48,472 ERROR [M:0;kiyo:42380.oldLogCleaner]
client.HConnectionManager(468): Connection not found in the list, can't delete
it (connection key=HConnectionKey{properties={hbase.rpc.timeout=60000,
hbase.zookeeper.property.clientPort=59832, hbase.client.pause=100,
zookeeper.znode.parent=/hbase, hbase.client.retries.number=350,
hbase.zookeeper.quorum=localhost}, username='zy'}). May be the key was modified?
java.lang.Exception
at
org.apache.hadoop.hbase.client.HConnectionManager.deleteConnection(HConnectionManager.java:468)
at
org.apache.hadoop.hbase.client.HConnectionManager.deleteConnection(HConnectionManager.java:404)
at
org.apache.hadoop.hbase.replication.master.ReplicationLogCleaner.stop(ReplicationLogCleaner.java:141)
at
org.apache.hadoop.hbase.master.cleaner.CleanerChore.cleanup(CleanerChore.java:276)
{code}
The call to HConnectionManager#deleteConnection() is not needed.
Here is related code which has a comment for this effect:
{code}
// Not sure why we're deleting a connection that we never acquired or used
HConnectionManager.deleteConnection(this.getConf());
{code}
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