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https://issues.apache.org/jira/browse/HDFS-7899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908153#comment-14908153
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Hadoop QA commented on HDFS-7899:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 17m 36s | Pre-patch trunk compilation is
healthy. |
| {color:green}+1{color} | @author | 0m 0s | The patch does not contain any
@author tags. |
| {color:red}-1{color} | tests included | 0m 0s | The patch doesn't appear
to include any new or modified tests. Please justify why no new tests are
needed for this patch. Also please list what manual steps were performed to
verify this patch. |
| {color:green}+1{color} | javac | 7m 49s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 10m 4s | There were no new javadoc
warning messages. |
| {color:green}+1{color} | release audit | 0m 23s | The applied patch does
not increase the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle | 1m 29s | There were no new checkstyle
issues. |
| {color:green}+1{color} | whitespace | 0m 0s | The patch has no lines that
end in whitespace. |
| {color:green}+1{color} | install | 1m 28s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 34s | The patch built with
eclipse:eclipse. |
| {color:green}+1{color} | findbugs | 1m 55s | The patch does not introduce
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | native | 3m 12s | Pre-build of native portion |
| {color:green}+1{color} | hdfs tests | 0m 28s | Tests passed in
hadoop-hdfs-client. |
| | | 45m 1s | |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12762388/HDFS-7899-01.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 83e65c5 |
| hadoop-hdfs-client test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/12677/artifact/patchprocess/testrun_hadoop-hdfs-client.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/12677/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf909.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP
PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/12677/console |
This message was automatically generated.
> Improve EOF error message
> -------------------------
>
> Key: HDFS-7899
> URL: https://issues.apache.org/jira/browse/HDFS-7899
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 2.6.0
> Reporter: Harsh J
> Assignee: Jagadesh Kiran N
> Priority: Minor
> Attachments: HDFS-7899-00.patch, HDFS-7899-01.patch
>
>
> Currently, a DN disconnection for reasons other than connection timeout or
> refused messages, such as an EOF message as a result of rejection or other
> network fault, reports in this manner:
> {code}
> WARN org.apache.hadoop.hdfs.DFSClient: Failed to connect to /x.x.x.x:nnnn for
> block, add to deadNodes and continue. java.io.EOFException: Premature EOF: no
> length prefix available
> java.io.EOFException: Premature EOF: no length prefix available
> at
> org.apache.hadoop.hdfs.protocol.HdfsProtoUtil.vintPrefixed(HdfsProtoUtil.java:171)
>
> at
> org.apache.hadoop.hdfs.RemoteBlockReader2.newBlockReader(RemoteBlockReader2.java:392)
>
> at
> org.apache.hadoop.hdfs.BlockReaderFactory.newBlockReader(BlockReaderFactory.java:137)
>
> at
> org.apache.hadoop.hdfs.DFSInputStream.getBlockReader(DFSInputStream.java:1103)
>
> at org.apache.hadoop.hdfs.DFSInputStream.blockSeekTo(DFSInputStream.java:538)
> at
> org.apache.hadoop.hdfs.DFSInputStream.readWithStrategy(DFSInputStream.java:750)
>
> at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:794)
> at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:602)
> {code}
> This is not very clear to a user (warn's at the hdfs-client). It could likely
> be improved with a more diagnosable message, or at least the direct reason
> than an EOF.
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