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From "Liu Shaohui (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-12739) Avoid too large identifier of ZooKeeperWatcher
Date Mon, 22 Dec 2014 11:55:13 GMT
Liu Shaohui created HBASE-12739:
-----------------------------------

             Summary: Avoid too large identifier of ZooKeeperWatcher
                 Key: HBASE-12739
                 URL: https://issues.apache.org/jira/browse/HBASE-12739
             Project: HBase
          Issue Type: Bug
            Reporter: Liu Shaohui
            Assignee: Liu Shaohui
            Priority: Minor


For each SyncConnected event,  the ZooKeeperWatcher will append the session id to its identity.

During the failover of zk, the zookeeper client can connect to the zk server, but the the
zk server can not serve the request, so the client will try continually, which will produce
many SyncConnected events and a very large identifier of ZooKeeperWatcher in hbase log.

{code}
2014-12-22,12:38:56,296 WARN org.apache.hadoop.hbase.zookeeper.ZKUtil: master:16500-0x349cbb4e4a7f0ba-0x349cbb4e4a7f0ba-0x349cbb4e4a7f0ba-0x349cbb4e4a7f0ba-0x349cbb4e4a7f0ba-0x349cbb4e4a7f0ba-0x349cbb4e4a7f0ba-0x349cbb4e4a7f0ba-0x349cbb4e4a7f0ba-0x349cbb4e4a7f0ba-0x349cbb4e4a7f0ba-...
{code}
A simple patch to fix this problem.




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