Maybe some code of MapTask is wrong.
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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.
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