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https://issues.apache.org/jira/browse/HAMA-387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13107647#comment-13107647
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Edward J. Yoon commented on HAMA-387:
-------------------------------------
FYI,
{code}
root@Cnode1:/usr/local/src/hama-trunk# core/bin/start-bspd.sh
hnode1: starting zookeeper, logging to
/usr/local/src/hama-trunk/core/bin/../logs/hama-root-zookeeper-Cnode1.out
starting bspmaster, logging to
/usr/local/src/hama-trunk/core/bin/../logs/hama-root-bspmaster-Cnode1.out
2011-09-19 15:33:21.206::INFO: Logging to STDERR via org.mortbay.log.StdErrLog
2011-09-19 15:33:21.247::INFO: jetty-6.1.14
2011-09-19 15:33:21.435::INFO: Started SelectChannelConnector@hnode1:40013
org.apache.zookeeper.KeeperException$NotEmptyException: KeeperErrorCode =
Directory not empty for /bsp/job_201109191247_0001
at org.apache.zookeeper.KeeperException.create(KeeperException.java:116)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
at org.apache.zookeeper.ZooKeeper.delete(ZooKeeper.java:728)
at org.apache.hama.bsp.BSPMaster.clearZKNodes(BSPMaster.java:477)
at org.apache.hama.bsp.BSPMaster.initZK(BSPMaster.java:469)
at org.apache.hama.bsp.BSPMaster.startMaster(BSPMaster.java:431)
{code}
> Advanced Barrier Synchronization
> --------------------------------
>
> Key: HAMA-387
> URL: https://issues.apache.org/jira/browse/HAMA-387
> Project: Hama
> Issue Type: Improvement
> Components: bsp
> Affects Versions: 0.3.0
> Reporter: Edward J. Yoon
> Assignee: ChiaHung Lin
> Fix For: 0.4.0
>
> Attachments: HAMA-387_v02.patch, HAMA-387_v03.patch,
> HAMA-387_v04.patch, new.patch, sleepless.patch, x.PNG, x.patch
>
>
> I think, the lock file must include:
> * the job ID
> * the task ID of the lock file owner
> * the current superstep count
> to check ownership and validation.
> Currently they are named by hostname, but multi-tasks can be run per one
> groomserver in the future.
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