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https://issues.apache.org/jira/browse/HDFS-10400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15283309#comment-15283309
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Jo Desmet commented on HDFS-10400:
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Hadoop version is 2.7.1.2.3.2.0-2950
Apologies, didn't notice that I used the hadoop 1 link.
I doubt that a fix will cause issues, as all other exceptions so far have been
returning a valid exit code (non-zero). Also filling up a filesystem will
hopefully be a rare event. In my case the event went undetected, and a lot of
wasteful processing continued.
It does look however that other exceptions are handled - things like a {{put}}
of a non existing file - as they do not generate a Java Exception but a clean
error report. I think what needs to happen is put a generic handler in place
for un-trapped exceptions, still do the exception dump, but then exit with
proper exit code.
There is precedent for this issue, please see
- [HADOOP-4340|https://issues.apache.org/jira/browse/hadoop-4340]
- [MAPREDUCE-3179|https://issues.apache.org/jira/browse/MAPREDUCE-3179]
> hdfs dfs -put exits with zero on error
> --------------------------------------
>
> Key: HDFS-10400
> URL: https://issues.apache.org/jira/browse/HDFS-10400
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Jo Desmet
>
> On a filesystem that is about to fill up, execute "hdfs dfs -put" for a file
> that is big enough to go over the limit. As a result, the command fails with
> an exception, however the command terminates normally (exit code 0).
> Expectation is that any detectable failure generates an exit code different
> than zero.
> Documentation on
> https://hadoop.apache.org/docs/r1.2.1/file_system_shell.html#put states:
> Exit Code:
> Returns 0 on success and -1 on error.
> following is the exception generated:
> 16/05/11 13:37:07 INFO hdfs.DFSClient: Exception in createBlockOutputStream
> java.io.EOFException: Premature EOF: no length prefix available
> at
> org.apache.hadoop.hdfs.protocolPB.PBHelper.vintPrefixed(PBHelper.java:2282)
> at
> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1352)
> at
> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1271)
> at
> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:464)
> 16/05/11 13:37:07 INFO hdfs.DFSClient: Abandoning
> BP-1964113808-130.8.138.99-1446787670498:blk_1073835906_95114
> 16/05/11 13:37:08 INFO hdfs.DFSClient: Excluding datanode
> DatanodeInfoWithStorage[130.8.138.99:50010,DS-eed7039a-8031-499e-85a5-7216b9d766a8,DISK]
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