[
https://issues.apache.org/jira/browse/MAPREDUCE-1213?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zheng Shao updated MAPREDUCE-1213:
----------------------------------
Status: Patch Available (was: Open)
> TaskTrackers restart is very slow because it deletes distributed cache
> directory synchronously
> ----------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1213
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1213
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.1
> Reporter: dhruba borthakur
> Assignee: Zheng Shao
> Attachments: MAPREDUCE-1213.1.patch
>
>
> We are seeing that when we restart a tasktracker, it tries to recursively
> delete all the file in the distributed cache. It invoked
> FileUtil.fullyDelete() which is very very slow. This means that the
> TaskTracker cannot join the cluster for an extended period of time (upto 2
> hours for us). The problem is acute if the number of files in a distributed
> cache is a few-thousands.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
