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Posted to mapreduce-issues@hadoop.apache.org by "Sharad Agarwal (Commented) (JIRA)" <ji...@apache.org> on 2011/12/22 07:05:31 UTC
[jira] [Commented] (MAPREDUCE-3473) A single task tracker failure
shouldn't result in Job failure
[ https://issues.apache.org/jira/browse/MAPREDUCE-3473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13174636#comment-13174636 ]
Sharad Agarwal commented on MAPREDUCE-3473:
-------------------------------------------
a single machine failure doesn't result in job to fail; thats the whole point of hadoop. smile.
we are missing the difference with *Task* and *TaskAttempt*. A task gets 4 chances (task attempts) by default to run before the job is declared failed.
I think this issue can be resolved as Invalid.
> A single task tracker failure shouldn't result in Job failure
> --------------------------------------------------------------
>
> Key: MAPREDUCE-3473
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3473
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: tasktracker
> Affects Versions: 0.20.205.0, 0.23.0
> Reporter: Eli Collins
>
> Currently some task failures may result in job failures. Eg a local TT disk failure seen in TaskLauncher#run, TaskRunner#run, MapTask#run is visible to and can hang the JobClient, causing the job to fail. Job execution should always be able to survive a task failure if there are sufficient resources.
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