You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-dev@hadoop.apache.org by "Eli Collins (Resolved) (JIRA)" <ji...@apache.org> on 2011/11/03 21:15:32 UTC
[jira] [Resolved] (HADOOP-7551) LocalDirAllocator should
incorporate LocalStorage
[ https://issues.apache.org/jira/browse/HADOOP-7551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eli Collins resolved HADOOP-7551.
---------------------------------
Resolution: Won't Fix
Per MAPREDUCE-3011 the if the conf given to the LocalDirAllocator is always updated by callers (eg with input based on LocalStorage), as is currently the case, it doesn't need to be aware. It would be good if LocalDirAllocator didn't need to be given a new conf but combining LocalDirAllocator and LocalStorage is probably too invasive for a stable release. Closing as won't fix.
> LocalDirAllocator should incorporate LocalStorage
> -------------------------------------------------
>
> Key: HADOOP-7551
> URL: https://issues.apache.org/jira/browse/HADOOP-7551
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 0.20.204.0
> Reporter: Eli Collins
>
> The o.a.h.fs.LocalDirAllocator is not aware of o.a.h.m.t.LocalStorage (introduced in MAPREDUCE-2413) - it always considers the configured local dirs, not just the ones that happen to be good. Therefore if there's a disk failure then *every* call to get a local path will result in LocalDirAllocator#confChanged doing a disk check of *all* the configured local dirs. It seems like LocalStorage should be a private class to LocalAllocator so that all users of LocalDirAllocator benefit from the disk failure handling and all the various users of LocalDirAllocator don't have to be modified to handle disk failures. Note that LocalDirAllocator already handles faulty directories.
--
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