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Posted to common-dev@hadoop.apache.org by "Bryan Pendleton (JIRA)" <ji...@apache.org> on 2006/03/08 01:51:40 UTC
[jira] Created: (HADOOP-69) Unchecked lookup value causes NPE in
FSNamesystemgetDatanodeHints
Unchecked lookup value causes NPE in FSNamesystemgetDatanodeHints
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Key: HADOOP-69
URL: http://issues.apache.org/jira/browse/HADOOP-69
Project: Hadoop
Type: Bug
Components: dfs
Reporter: Bryan Pendleton
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[jira] Resolved: (HADOOP-69) Unchecked lookup value causes NPE in
FSNamesystemgetDatanodeHints
Posted by "Doug Cutting (JIRA)" <ji...@apache.org>.
[ http://issues.apache.org/jira/browse/HADOOP-69?page=all ]
Doug Cutting resolved HADOOP-69:
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Fix Version: 0.2
Resolution: Fixed
Committed. Sorry, this fell off my radar. Thanks for the reminder. I fixed something related in:
http://svn.apache.org/viewcvs.cgi/lucene/hadoop/trunk/src/java/org/apache/hadoop/dfs/FSNamesystem.java?rev=382545&r1=377317&r2=382545
so I hadn't seen this problem.
> Unchecked lookup value causes NPE in FSNamesystemgetDatanodeHints
> -----------------------------------------------------------------
>
> Key: HADOOP-69
> URL: http://issues.apache.org/jira/browse/HADOOP-69
> Project: Hadoop
> Type: Bug
> Components: dfs
> Reporter: Bryan Pendleton
> Fix For: 0.2
> Attachments: patch.txt
>
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[jira] Updated: (HADOOP-69) Unchecked lookup value causes NPE in
FSNamesystemgetDatanodeHints
Posted by "Bryan Pendleton (JIRA)" <ji...@apache.org>.
[ http://issues.apache.org/jira/browse/HADOOP-69?page=all ]
Bryan Pendleton updated HADOOP-69:
----------------------------------
Attachment: patch.txt
Check for null value after looking up blocks (ie, no known node has the block). Should prevent the NPE. The correct value (no hints for unfound blocks) is returned.
> Unchecked lookup value causes NPE in FSNamesystemgetDatanodeHints
> -----------------------------------------------------------------
>
> Key: HADOOP-69
> URL: http://issues.apache.org/jira/browse/HADOOP-69
> Project: Hadoop
> Type: Bug
> Components: dfs
> Reporter: Bryan Pendleton
> Attachments: patch.txt
>
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[jira] Commented: (HADOOP-69) Unchecked lookup value causes NPE in
FSNamesystemgetDatanodeHints
Posted by "Bryan Pendleton (JIRA)" <ji...@apache.org>.
[ http://issues.apache.org/jira/browse/HADOOP-69?page=comments#action_12375403 ]
Bryan Pendleton commented on HADOOP-69:
---------------------------------------
Bump: Any reason this patch hasn't been applied? It looks like it's still possible for non-found blocks to return null, causing an NPE in this function, rather than a more graceful recovery.
> Unchecked lookup value causes NPE in FSNamesystemgetDatanodeHints
> -----------------------------------------------------------------
>
> Key: HADOOP-69
> URL: http://issues.apache.org/jira/browse/HADOOP-69
> Project: Hadoop
> Type: Bug
> Components: dfs
> Reporter: Bryan Pendleton
> Attachments: patch.txt
>
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