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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-353) DFSClient does not always throw a FileNotFound exception when a file could not be opened
Date Tue, 22 Jul 2014 18:20:39 GMT

     [ https://issues.apache.org/jira/browse/HDFS-353?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Allen Wittenauer updated HDFS-353:
----------------------------------

    Labels: newbie  (was: )

> DFSClient does not always throw a FileNotFound exception when a file could not be opened
> ----------------------------------------------------------------------------------------
>
>                 Key: HDFS-353
>                 URL: https://issues.apache.org/jira/browse/HDFS-353
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Steve Loughran
>            Assignee: Chu Tong
>            Priority: Minor
>              Labels: newbie
>
> DfsClient.openInit() throws an IOE when a file can't be found, that is, it has no blocks
> [sf-startdaemon-debug] 09/02/16 12:38:47 [IPC Server handler 0 on 8012] INFO mapred.TaskInProgress
: Error from attempt_200902161238_0001_m_000000_2: java.io.IOException: Cannot open filename
/tests/mrtestsequence/in/in.txt
> [sf-startdaemon-debug] 	at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.openInfo(DFSClient.java:1352)
> [sf-startdaemon-debug] 	at org.apache.hadoop.hdfs.DFSClient$DFSInputStream.<init>(DFSClient.java:1343)
> [sf-startdaemon-debug] 	at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:312)
> [sf-startdaemon-debug] 	at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:177)
> [sf-startdaemon-debug] 	at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:347)
> I propose turning this into a FileNotFoundException, which is more specific about the
underlying problem. Including the full dfs URL would be useful too.



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