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amar_kamat edited comment on HADOOP-2419 at 12/17/07 9:59 AM: -------------------------------------------------------------- Plz check the new patch [https://issues.apache.org/jira/secure/attachment/12371797/HADOOP-2419.patch]. Earlier the calls to {{MapTask.Collect()}} were not thread-safe. Now the call to {{Collect()}} is made thread-safe. Let us know if this patch works fine. was (Author: amar_kamat): Plz check the new patch [https://issues.apache.org/jira/secure/attachment/12371775/HADOOP-2419.patch]. Earlier the calls to {{MapTask.Collect()}} were not thread-safe. Now the call to {{Collect()}} is made thread-safe. Let us know if this patch works fine. > 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. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.