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Posted to hdfs-issues@hadoop.apache.org by "Hairong Kuang (JIRA)" <ji...@apache.org> on 2010/05/19 20:21:58 UTC
[jira] Created: (HDFS-1165) createSymlink should not hold the
fsnamesytem lock when sync its edit log to disk
createSymlink should not hold the fsnamesytem lock when sync its edit log to disk
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Key: HDFS-1165
URL: https://issues.apache.org/jira/browse/HDFS-1165
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Affects Versions: 0.21.0
Reporter: Hairong Kuang
Assignee: Eli Collins
Priority: Blocker
Fix For: 0.21.0, 0.22.0
Holding the fsnamesytem lock while calling logSync is unnecessary and decrease NameNode performance.
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[jira] Commented: (HDFS-1165) createSymlink should not hold the
fsnamesytem lock when sync its edit log to disk
Posted by "Todd Lipcon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-1165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12869249#action_12869249 ]
Todd Lipcon commented on HDFS-1165:
-----------------------------------
This is fixed in HDFS-988 (which generally cleans up synchronization and safemode checks throughout FSN). I need to do a unit test over there, then it should be good to commit.
> createSymlink should not hold the fsnamesytem lock when sync its edit log to disk
> ---------------------------------------------------------------------------------
>
> Key: HDFS-1165
> URL: https://issues.apache.org/jira/browse/HDFS-1165
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.21.0
> Reporter: Hairong Kuang
> Assignee: Eli Collins
> Priority: Blocker
> Fix For: 0.21.0, 0.22.0
>
>
> Holding the fsnamesytem lock while calling logSync is unnecessary and decrease NameNode performance.
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[jira] Resolved: (HDFS-1165) createSymlink should not hold the
fsnamesytem lock when sync its edit log to disk
Posted by "Todd Lipcon (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-1165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon resolved HDFS-1165.
-------------------------------
Resolution: Duplicate
Since HDFS-988 is marked blocker, and I should have a unit test for it ready soon, I'm marking this one as duplicate.
> createSymlink should not hold the fsnamesytem lock when sync its edit log to disk
> ---------------------------------------------------------------------------------
>
> Key: HDFS-1165
> URL: https://issues.apache.org/jira/browse/HDFS-1165
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.21.0
> Reporter: Hairong Kuang
> Assignee: Eli Collins
> Priority: Blocker
> Fix For: 0.21.0, 0.22.0
>
>
> Holding the fsnamesytem lock while calling logSync is unnecessary and decrease NameNode performance.
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[jira] Commented: (HDFS-1165) createSymlink should not hold the
fsnamesytem lock when sync its edit log to disk
Posted by "Eli Collins (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-1165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12869343#action_12869343 ]
Eli Collins commented on HDFS-1165:
-----------------------------------
Good find Hairong. Assuming HDFS-988 goes into 21 I think we can close this, unless Todd do you want to pull out that particular fix to a patch for this jira?
> createSymlink should not hold the fsnamesytem lock when sync its edit log to disk
> ---------------------------------------------------------------------------------
>
> Key: HDFS-1165
> URL: https://issues.apache.org/jira/browse/HDFS-1165
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.21.0
> Reporter: Hairong Kuang
> Assignee: Eli Collins
> Priority: Blocker
> Fix For: 0.21.0, 0.22.0
>
>
> Holding the fsnamesytem lock while calling logSync is unnecessary and decrease NameNode performance.
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