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Ruyue Ma commented on MAPREDUCE-1555: ------------------------------------- @ Arun C Murthy: so that MapTask object in JobTracker doesn't have a reference to the input-split. Why? > Maybe some code of MapTask is wrong. > ------------------------------------ > > Key: MAPREDUCE-1555 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-1555 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: task > Reporter: Ruyue Ma > > {code:title=MapTask.java|borderStyle=solid} > public void write(DataOutput out) throws IOException { > super.write(out); > if (isMapOrReduce()) { > splitMetaInfo.write(out); > splitMetaInfo = null; // HERE: why set null ?????? > } > } > {code} > In above code, if the splitMetaInfo is set null, Second Serialization (will > invoke write) will throw NullPointerException. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.