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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-1118) NullPointerException in DistributedFileSystem$RawDistributedFileSystem.reportChecksumFailure
Date Mon, 30 Apr 2007 23:49:15 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1118?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hairong Kuang updated HADOOP-1118:
----------------------------------

    Attachment:     (was: NPEReportChecksum.patch)

> NullPointerException in DistributedFileSystem$RawDistributedFileSystem.reportChecksumFailure
> --------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1118
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1118
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.12.0
>            Reporter: Nigel Daley
>         Assigned To: Hairong Kuang
>         Attachments: NPEChecksum.patch
>
>
> I saw one NullPointerException in the JT log during a large sort run:
> 2007-03-14 08:36:10,210 INFO org.apache.hadoop.mapred.TaskInProgress: Error from task_0002_m_037315_1:
java.lang.NullPointerException
>         at org.apache.hadoop.dfs.DistributedFileSystem$RawDistributedFileSystem.reportChecksumFailure(DistributedFileSystem.java:326)
>         at org.apache.hadoop.dfs.DistributedFileSystem.reportChecksumFailure(DistributedFileSystem.java:405)
>         at org.apache.hadoop.fs.ChecksumFileSystem$FSInputChecker.verifySum(ChecksumFileSystem.java:253)
>         at org.apache.hadoop.fs.ChecksumFileSystem$FSInputChecker.readBuffer(ChecksumFileSystem.java:211)
>         at org.apache.hadoop.fs.ChecksumFileSystem$FSInputChecker.read(ChecksumFileSystem.java:167)
>         at org.apache.hadoop.fs.FSDataInputStream$PositionCache.read(FSDataInputStream.java:41)
>         at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
>         at java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
>         at java.io.BufferedInputStream.read(BufferedInputStream.java:317)
>         at java.io.DataInputStream.readFully(DataInputStream.java:178)
>         at java.io.DataInputStream.readFully(DataInputStream.java:152)
>         at org.apache.hadoop.io.SequenceFile$Reader.sync(SequenceFile.java:1712)
>         at org.apache.hadoop.mapred.SequenceFileRecordReader.<init>(SequenceFileRecordReader.java:45)
>         at org.apache.hadoop.mapred.SequenceFileInputFormat.getRecordReader(SequenceFileInputFormat.java:55)
>         at org.apache.hadoop.mapred.MapTask.run(MapTask.java:139)
>         at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1445)

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