[
https://issues.apache.org/jira/browse/HAMA-756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13655548#comment-13655548
]
MaoYuan Xian commented on HAMA-756:
-----------------------------------
Just saw this message, sorry for delay. Seems you have made the test. In the
next time, I will try to do that:)
> Timing issue and file merging algorithm in PartitioningRunner make job fail
> ---------------------------------------------------------------------------
>
> Key: HAMA-756
> URL: https://issues.apache.org/jira/browse/HAMA-756
> Project: Hama
> Issue Type: Bug
> Reporter: MaoYuan Xian
> Assignee: MaoYuan Xian
> Priority: Blocker
> Fix For: 0.6.2
>
> Attachments: HAMA-756.patch
>
>
> There are two major problems in bsp methor of PartitioningRunner may make the
> partitioning fail:
> 1. The call to peer.getNumPeers() may trigger the timing issue. In the
> special situation when some tasks complete the bsp call but some others just
> enter the "for (FileStatus statu : status)" loop, these remaining task
> calling to peer.getNumPeers() will trigger the problem.
> 2. The algorithm of merging the sequence files has the problem: e.g. when
> desiredNum is 8 and partitioning task number (peer.getNumPeers()) is 6, the
> part-7 directory can not find the handler to merging it as a file.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
