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https://issues.apache.org/jira/browse/CURATOR-315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jordan Zimmerman reassigned CURATOR-315:
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Assignee: Jordan Zimmerman
> Reconnect during InterProcessSemaphoreV2.acquire can lead to orphaned node
> --------------------------------------------------------------------------
>
> Key: CURATOR-315
> URL: https://issues.apache.org/jira/browse/CURATOR-315
> Project: Apache Curator
> Issue Type: Bug
> Components: Recipes
> Affects Versions: 3.1.0, 2.10.0
> Reporter: Ulrich Geilmann
> Assignee: Jordan Zimmerman
>
> Acquiring and releasing a lease can lead to a leftover node when the client
> has to reconnect. Subsequent attempts to acquire a lease on the same path
> fail when max leases is reached due to these nodes.
> Here's an excerpt of the client log when that happened:
> {noformat}
> 2016-04-11 10:50:03.634+0000 UTC - INFO org.apache.curator.ConnectionState -
> Connection attempt unsuccessful after 81663 (greater than max timeout of
> 60000). Resetting connection and trying again with a new connection.
> 2016-04-11 10:50:03.638+0000 UTC - INFO org.apache.zookeeper.ZooKeeper -
> Session: 0x15404ee16da0015 closed
> 2016-04-11 10:50:03.638+0000 UTC - INFO org.apache.zookeeper.ZooKeeper -
> Initiating client connection,
> connectString=172.16.45.128:2181,172.16.45.192:2181,172.16.45.56:2181
> sessionTimeout=60000 watcher=org.apache.curator.ConnectionState@34129c78
> 2016-04-11 10:50:03.640+0000 UTC - INFO org.apache.zookeeper.ClientCnxn -
> Opening socket connection to server 172.16.45.128/172.16.45.128:2181. Will
> not attempt to authenticate using SASL (unknown error)
> 2016-04-11 10:50:03.640+0000 UTC - INFO org.apache.zookeeper.ClientCnxn -
> Socket connection established to 172.16.45.128/172.16.45.128:2181, initiating
> session
> 2016-04-11 10:50:03.643+0000 UTC - INFO org.apache.zookeeper.ClientCnxn -
> Session establishment complete on server 172.16.45.128/172.16.45.128:2181,
> sessionid = 0x25404f0136d0011, negotiated timeout = 40000
> 2016-04-11 10:50:03.643+0000 UTC - INFO o.a.c.f.s.ConnectionStateManager -
> State change: RECONNECTED
> 2016-04-11 10:50:03.644+0000 UTC - INFO o.a.c.f.r.l.InterProcessSemaphoreV2 -
> Sequential path not found:
> /locking/leases/_c_32448fde-1af3-472f-91ff-ec8a4c4b5034-lease-0000000002
> 2016-04-11 10:50:03.644+0000 UTC - INFO org.apache.zookeeper.ClientCnxn -
> EventThread shut down
> 2016-04-11 10:50:06.625+0000 UTC - INFO o.a.c.f.r.l.InterProcessSemaphoreV2 -
> Lease already released
> {noformat}
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