hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "suja s (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3477) FormatZK and ZKFC startup can fail due to zkclient connection establishment delay
Date Wed, 30 May 2012 14:26:23 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3477?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

suja s updated HDFS-3477:
-------------------------

    Description: 
Format and ZKFC startup flows continue further after creation of zkclient connection without
waiting to check whether the connection is completely established. This  leads to failure
at the subsequent point if connection was not complete by then.

Exception trace for format 
{noformat}
12/05/30 19:48:24 INFO zookeeper.ClientCnxn: Socket connection established to HOST-xx-xx-xx-55/xx.xx.xx.55:2182,
initiating session
12/05/30 19:48:24 INFO zookeeper.ClientCnxn: Session establishment complete on server HOST-xx-xx-xx-55/xx.xx.xx.55:2182,
sessionid = 0x1379da4660c0014, negotiated timeout = 5000
12/05/30 19:48:24 WARN ha.ActiveStandbyElector: Ignoring stale result from old client with
sessionId 0x1379da4660c0014
12/05/30 19:48:24 INFO zookeeper.ZooKeeper: Session: 0x1379da4660c0014 closed
12/05/30 19:48:24 INFO zookeeper.ClientCnxn: EventThread shut down
Exception in thread "main" java.io.IOException: Couldn't determine existence of znode '/hadoop-ha/hacluster'
        at org.apache.hadoop.ha.ActiveStandbyElector.parentZNodeExists(ActiveStandbyElector.java:263)
        at org.apache.hadoop.ha.ZKFailoverController.formatZK(ZKFailoverController.java:257)
        at org.apache.hadoop.ha.ZKFailoverController.doRun(ZKFailoverController.java:195)
        at org.apache.hadoop.ha.ZKFailoverController.access$000(ZKFailoverController.java:58)
        at org.apache.hadoop.ha.ZKFailoverController$1.run(ZKFailoverController.java:163)
        at org.apache.hadoop.ha.ZKFailoverController$1.run(ZKFailoverController.java:159)
        at org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:438)
        at org.apache.hadoop.ha.ZKFailoverController.run(ZKFailoverController.java:159)
        at org.apache.hadoop.hdfs.tools.DFSZKFailoverController.main(DFSZKFailoverController.java:171)
Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode =
ConnectionLoss for /hadoop-ha/hacluster
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
        at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1021)
        at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1049)
        at org.apache.hadoop.ha.ActiveStandbyElector.parentZNodeExists(ActiveStandbyElector.java:261)
        ... 8 more

{noformat}

  was:Format and ZKFC startup flows continue further after creation of zkclient connection
without waiting to check whether the connection is completely established. This  leads to
failure at the subsequent point if connection was not complete by then.

    
> FormatZK and ZKFC startup can fail due to zkclient connection establishment delay
> ---------------------------------------------------------------------------------
>
>                 Key: HDFS-3477
>                 URL: https://issues.apache.org/jira/browse/HDFS-3477
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: auto-failover
>    Affects Versions: 3.0.0
>            Reporter: suja s
>            Assignee: Rakesh R
>
> Format and ZKFC startup flows continue further after creation of zkclient connection
without waiting to check whether the connection is completely established. This  leads to
failure at the subsequent point if connection was not complete by then.
> Exception trace for format 
> {noformat}
> 12/05/30 19:48:24 INFO zookeeper.ClientCnxn: Socket connection established to HOST-xx-xx-xx-55/xx.xx.xx.55:2182,
initiating session
> 12/05/30 19:48:24 INFO zookeeper.ClientCnxn: Session establishment complete on server
HOST-xx-xx-xx-55/xx.xx.xx.55:2182, sessionid = 0x1379da4660c0014, negotiated timeout = 5000
> 12/05/30 19:48:24 WARN ha.ActiveStandbyElector: Ignoring stale result from old client
with sessionId 0x1379da4660c0014
> 12/05/30 19:48:24 INFO zookeeper.ZooKeeper: Session: 0x1379da4660c0014 closed
> 12/05/30 19:48:24 INFO zookeeper.ClientCnxn: EventThread shut down
> Exception in thread "main" java.io.IOException: Couldn't determine existence of znode
'/hadoop-ha/hacluster'
>         at org.apache.hadoop.ha.ActiveStandbyElector.parentZNodeExists(ActiveStandbyElector.java:263)
>         at org.apache.hadoop.ha.ZKFailoverController.formatZK(ZKFailoverController.java:257)
>         at org.apache.hadoop.ha.ZKFailoverController.doRun(ZKFailoverController.java:195)
>         at org.apache.hadoop.ha.ZKFailoverController.access$000(ZKFailoverController.java:58)
>         at org.apache.hadoop.ha.ZKFailoverController$1.run(ZKFailoverController.java:163)
>         at org.apache.hadoop.ha.ZKFailoverController$1.run(ZKFailoverController.java:159)
>         at org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:438)
>         at org.apache.hadoop.ha.ZKFailoverController.run(ZKFailoverController.java:159)
>         at org.apache.hadoop.hdfs.tools.DFSZKFailoverController.main(DFSZKFailoverController.java:171)
> Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode
= ConnectionLoss for /hadoop-ha/hacluster
>         at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
>         at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
>         at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1021)
>         at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1049)
>         at org.apache.hadoop.ha.ActiveStandbyElector.parentZNodeExists(ActiveStandbyElector.java:261)
>         ... 8 more
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message