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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-5267) DFSClient could throw a FileNotFound exception when a file could not be opened
Date Mon, 16 Feb 2009 14:07:03 GMT
DFSClient could throw a FileNotFound exception when a file could not be opened
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                 Key: HADOOP-5267
                 URL: https://issues.apache.org/jira/browse/HADOOP-5267
             Project: Hadoop Core
          Issue Type: Improvement
          Components: dfs
    Affects Versions: 0.21.0
            Reporter: Steve Loughran
            Priority: Minor


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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