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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-2419) HADOOP-1965 breaks nutch
Date Wed, 16 Jan 2008 11:26:34 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-2419?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amar Kamat resolved HADOOP-2419.
--------------------------------

    Resolution: Fixed

Assuming that concurrent access to {{MapTask.collect()}} was the cause (which is now fixed
in HADOOP-1965), resolving the issue.

> HADOOP-1965 breaks nutch
> ------------------------
>
>                 Key: HADOOP-2419
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2419
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.16.0
>            Reporter: Paul Saab
>            Assignee: Amar Kamat
>         Attachments: jobtasks.jsp.html, MapRunnableTest.java
>
>
> When running nutch on trunk, nutch is unable to complete a fetch and the following exceptions
are raised:
> java.io.EOFException
>         at java.io.DataInputStream.readFully(DataInputStream.java:180)
>         at org.apache.nutch.protocol.Content.readFields(Content.java:158)
>         at org.apache.nutch.util.GenericWritableConfigurable.readFields(GenericWritableConfigurable.java:38)
>         at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.spill(MapTask.java:536)
>         at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpillToDisk(MapTask.java:474)
>         at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.access$100(MapTask.java:248)
>         at org.apache.hadoop.mapred.MapTask$MapOutputBuffer$1.run(MapTask.java:413)
> Exception in thread "SortSpillThread" java.lang.NegativeArraySizeException
>      at org.apache.hadoop.io.Text.readString(Text.java:388)
>      at org.apache.nutch.metadata.Metadata.readFields(Metadata.java:243)
>      at org.apache.nutch.protocol.Content.readFields(Content.java:151)
>      at org.apache.nutch.util.GenericWritableConfigurable.readFields(GenericWritableConfigurable.java:38)
>      at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.spill(MapTask.java:536)
>      at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpillToDisk(MapTask.java:474)
>      at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.access$100(MapTask.java:248)
>      at org.apache.hadoop.mapred.MapTask$MapOutputBuffer$1.run(MapTask.java:413)
> After reverting HADOOP-1965 nutch works just fine.

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