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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