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Date: Fri, 30 Sep 2011 20:36:45 +0000 (UTC)
From: "Milind Bhandarkar (Commented) (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HADOOP-7629) regression with MAPREDUCE-2289 -
 setPermission passed immutable FsPermission (rpc failure)
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    [ https://issues.apache.org/jira/browse/HADOOP-7629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118410#comment-13118410 ] 

Milind Bhandarkar commented on HADOOP-7629:
-------------------------------------------

Since this is a bugfix, and affects 0.22, can we request a patch for 0.22 as well ?
                
> regression with MAPREDUCE-2289 - setPermission passed immutable FsPermission (rpc failure)
> ------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-7629
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7629
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.22.0
>            Reporter: Patrick Hunt
>            Assignee: Todd Lipcon
>             Fix For: 0.20.206.0, 0.23.0
>
>         Attachments: hadoop-7629-20s.txt, hadoop-7629.txt, hadoop-7629.txt
>
>
> MAPREDUCE-2289 introduced the following change:
> {noformat}
> +        fs.setPermission(stagingArea, JOB_DIR_PERMISSION);
> {noformat}
> JOB_DIR_PERMISSION is an immutable FsPermission which cannot be used in RPC calls, it results in the following exception:
> {noformat}
> 2011-09-08 16:31:45,187 WARN org.apache.hadoop.ipc.Server: Unable to read call parameters for client 127.0.0.1
> java.lang.RuntimeException: java.lang.NoSuchMethodException: org.apache.hadoop.fs.permission.FsPermission$2.<init>()
>         at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:115)
>         at org.apache.hadoop.io.WritableFactories.newInstance(WritableFactories.java:53)
>         at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:236)
>         at org.apache.hadoop.ipc.RPC$Invocation.readFields(RPC.java:104)
>         at org.apache.hadoop.ipc.Server$Connection.processData(Server.java:1337)
>         at org.apache.hadoop.ipc.Server$Connection.processOneRpc(Server.java:1315)
>         at org.apache.hadoop.ipc.Server$Connection.readAndProcess(Server.java:1215)
>         at org.apache.hadoop.ipc.Server$Listener.doRead(Server.java:566)
>         at org.apache.hadoop.ipc.Server$Listener$Reader.run(Server.java:363)
> Caused by: java.lang.NoSuchMethodException: org.apache.hadoop.fs.permission.FsPermission$2.<init>()
>         at java.lang.Class.getConstructor0(Class.java:2706)
>         at java.lang.Class.getDeclaredConstructor(Class.java:1985)
>         at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:109)
>         ... 8 more
> {noformat}

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