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Posted to common-issues@hadoop.apache.org by "Hairong Kuang (JIRA)" <ji...@apache.org> on 2010/05/05 21:45:05 UTC
[jira] Updated: (HADOOP-6640) FileSystem.get() does RPC retries
within a static synchronized block
[ https://issues.apache.org/jira/browse/HADOOP-6640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hairong Kuang updated HADOOP-6640:
----------------------------------
Attachment: getFS_yahoo20s.patch
This patch is for Yahoo's 0.20s branch.
> FileSystem.get() does RPC retries within a static synchronized block
> --------------------------------------------------------------------
>
> Key: HADOOP-6640
> URL: https://issues.apache.org/jira/browse/HADOOP-6640
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Environment: all
> Reporter: Alejandro Abdelnur
> Assignee: Hairong Kuang
> Priority: Critical
> Fix For: 0.21.0
>
> Attachments: getFS.patch, getFS_yahoo20s.patch
>
>
> If using FileSystem.get() in a multithreaded environment, and one get() locks because the NN URI is too slow or not responding and retries are in progress, all other get() (for the diffferent users, NN) are blocked.
> the synchronized block in in the static instance of Cache inner class.
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