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https://issues.apache.org/jira/browse/ZOOKEEPER-1600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13530342#comment-13530342
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Patrick Hunt commented on ZOOKEEPER-1600:
-----------------------------------------
Hi Deepa, I looked at the transaction logs, afaict this is not a bug, rather
the znode you mention is not deleted on session expiration because it was
already explicitly deleted by another session.
I dumped the txnlog from zookeeper2, here is the section of interest. Notice
that 0x23b6ad600580000 explicitly deletes /ACTIVE/192.168.11.94 prior to
session 0x23b6ad21d160000 being closed:
{noformat}
12/5/12 3:33:37 AM PST session 0x23b6ad600580000 cxid 0x50bffce0 zxid
0x80000000f delete '/ACTIVE/192.168.11.94
12/5/12 3:33:37 AM PST session 0x23b6ad600580000 cxid 0x50bffce1 zxid
0x800000010 create
'/STANDBY/192.168.11.94,#00004e6f6465,v{s{31,s{'world,'anyone}}},T,16
12/5/12 3:33:37 AM PST session 0x23b6ad600580000 cxid 0x50bffce2 zxid
0x800000011 setData
'/STANDBY/192.168.11.94,#000000000000d00000003139322e3136382e31312e393411,1
12/5/12 3:33:37 AM PST session 0x23b6ad600580000 cxid 0x50bffce3 zxid
0x800000012 delete '/LOCKNODE
12/5/12 3:33:58 AM PST session 0x33b6ad37c350000 cxid 0x0 zxid 0x800000013
closeSession null
12/5/12 3:33:58 AM PST session 0x23b6ad21d160000 cxid 0x0 zxid 0x800000014
closeSession null
{noformat}
I can see a bit later (same second, notice the zxid) 0x23b6ad600580000 goes
ahead and recreates the znode:
{noformat}
12/5/12 3:33:58 AM PST session 0x23b6ad600580000 cxid 0x50bffcf0 zxid
0x800000025 create
'/ACTIVE/192.168.11.94,#00004e6f6465,v{s{31,s{'world,'anyone}}},T,18
{noformat}
Is there something I'm missing here? afaict things are working properly, at
least on the ZK side of things.
> Ephemeral node not getting deleted
> ----------------------------------
>
> Key: ZOOKEEPER-1600
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1600
> Project: ZooKeeper
> Issue Type: Bug
> Reporter: Deepa Muthunoori
> Assignee: Patrick Hunt
> Attachments: ZKServerLogs.tar.gz
>
>
> Closing of session is not deleting all the ephemeral nodes.
> (Eg: From the log, session Id:0x23b6ad21d160000 creates two
> ephemerals(/CONFIGNODE/NP2147483647 and /ACTIVE/192.168.11.94) but when the
> session expires, only /CONFIGNODE/NP2147483647 is getting deleted)
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