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https://issues.apache.org/jira/browse/HADOOP-3894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12632613#action_12632613
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Steve Loughran commented on HADOOP-3894:
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1. processDataNodeError does use the src parameter when creating an exception
to forward up.
lastException = new IOException("Could not get block locations. " +
"Source file \""+src
+ "\" - Aborting...");
Adding the file that caused the error is generally useful, as it tells the
caller which file is playing up. That may be immediately obvious if using the
command line tools, but not when you are working with an application that is
issuing lots of calls. Having that filename in test results is invaluable.
2. I managed to get the code to timeout while making changes in other parts of
the system.
> DFSClient chould log errors better, and provide better diagnostics
> ------------------------------------------------------------------
>
> Key: HADOOP-3894
> URL: https://issues.apache.org/jira/browse/HADOOP-3894
> Project: Hadoop Core
> Issue Type: Improvement
> Components: dfs
> Affects Versions: 0.19.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Trivial
> Fix For: 0.19.0
>
> Attachments: hadoop-3894.patch, hadoop-3894.patch, hadoop-3894.patch
>
>
> In my test runs I see a stack trace from DFSClient, because it isn't logging
> through the log APIs in its close() method. It should use the logger, for
> better error reporting
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