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From "Haohui Mai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7818) FsShell -text over webhdfs fails with NPE in DN
Date Sun, 22 Feb 2015 09:44:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14332094#comment-14332094
] 

Haohui Mai commented on HDFS-7818:
----------------------------------

Note that {{OffsetParam}} is also used by the NN and {{WebHdfsFileSystem}}. I believe that
we should fix it in {{org.apache.hadoop.hdfs.web.resources.OffsetParam}} (or even in {{LongParam}}),
where the default value is specified.

> FsShell -text over webhdfs fails with NPE in DN
> -----------------------------------------------
>
>                 Key: HDFS-7818
>                 URL: https://issues.apache.org/jira/browse/HDFS-7818
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 2.7.0
>            Reporter: Eric Payne
>            Assignee: Eric Payne
>         Attachments: HDFS-7818.v1.txt, HDFS-7818.v2.txt
>
>
> This is a regression in 2.7 and later.
> {{hadoop fs -cat}} over webhdfs works, but {{hadoop fs -text}} does not:
> {code}
> $ hadoop fs -cat webhdfs://myhost.com/tmp/test.1
> ... output ...
> $ hadoop fs -text webhdfs://myhost.com/tmp/test.1
> text: org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): null
> 	at org.apache.hadoop.hdfs.web.JsonUtil.toRemoteException(JsonUtil.java:165)
> 	at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:358)
> 	at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.access$200(WebHdfsFileSystem.java:91)
> 	at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.runWithRetry(WebHdfsFileSystem.java:615)
> 	at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.access$100(WebHdfsFileSystem.java:463)
> 	at org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner$1.run(WebHdfsFileSystem.java:492)
> ...
> {code}



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