You are viewing a plain text version of this content. The canonical link for it is here.
Posted to mapreduce-issues@hadoop.apache.org by "Harsh J (JIRA)" <ji...@apache.org> on 2012/10/07 15:18:03 UTC
[jira] [Updated] (MAPREDUCE-2584) Check for serializers early, and
give out more information regarding missing serializers
[ https://issues.apache.org/jira/browse/MAPREDUCE-2584?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Harsh J updated MAPREDUCE-2584:
-------------------------------
Attachment: MAPREDUCE-2584.r7.diff
Rebased yet again. Part of this patch's changes on the common side were already committed, so am inclined to commit this in as well.
But I'd like to know if there are any concerns with this new front-end check. Anyone? Is throwing an exception bad if there's a ClassNotFound? Should we just WARN?
> Check for serializers early, and give out more information regarding missing serializers
> ----------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-2584
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2584
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: task
> Affects Versions: 0.20.2
> Reporter: Harsh J
> Assignee: Harsh J
> Labels: serializers, tasks
> Attachments: MAPREDUCE-2584.r2.diff, MAPREDUCE-2584.r3.diff, MAPREDUCE-2584.r4.diff, MAPREDUCE-2584.r5.diff, MAPREDUCE-2584.r6.diff, MAPREDUCE-2584.r7.diff, MAPREDUCE-2584.r7.diff
>
>
> As discussed on HADOOP-7328, MapReduce can handle serializers in a much better way in case of bad configuration, improper imports (Some odd Text class instead of the Writable Text set as key), etc..
> This issue covers the MapReduce parts of the improvements (made to IFile, MapOutputBuffer, etc. and possible early-check of serializer availability pre-submit) that provide more information than just an NPE as is the current case.
--
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