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https://issues.apache.org/jira/browse/HDFS-5546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14039131#comment-14039131
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Daryn Sharp commented on HDFS-5546:
-----------------------------------
I'm not sure I understand the question. The first patch didn't stop. It just
displayed the FNF for the command line path and kept going. If it traps IOE
instead, I think that's all we need.
> race condition crashes "hadoop ls -R" when directories are moved/removed
> ------------------------------------------------------------------------
>
> Key: HDFS-5546
> URL: https://issues.apache.org/jira/browse/HDFS-5546
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Colin Patrick McCabe
> Assignee: Lei (Eddy) Xu
> Priority: Minor
> Fix For: 3.0.0
>
> Attachments: HDFS-5546.1.patch, HDFS-5546.2.000.patch,
> HDFS-5546.2.001.patch, HDFS-5546.2.002.patch, HDFS-5546.2.003.patch
>
>
> This seems to be a rare race condition where we have a sequence of events
> like this:
> 1. org.apache.hadoop.shell.Ls calls DFS#getFileStatus on directory D.
> 2. someone deletes or moves directory D
> 3. org.apache.hadoop.shell.Ls calls PathData#getDirectoryContents(D), which
> calls DFS#listStatus(D). This throws FileNotFoundException.
> 4. ls command terminates with FNF
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