hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5546) race condition crashes "hadoop ls -R" when directories are moved/removed
Date Mon, 15 Sep 2014 22:00:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14134560#comment-14134560
] 

Colin Patrick McCabe commented on HDFS-5546:
--------------------------------------------

Which patch is current?  HDFS-5546.2.004.patch?  I'm not completely happy with that patch
since the return code is still 0 even after errors are encountered.

> 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
>         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, HDFS-5546.2.004.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



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message