java.lang.NegativeArraySizeException during Quicksort
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Key: PIG-1720
URL: https://issues.apache.org/jira/browse/PIG-1720
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.8.0
Reporter: Viraj Bhat
Fix For: 0.8.0
I have a simple script, which I attempt to run with Pig 0.8
The script looks like this:
{code}
clicks = load 'pairs.out' using PigStorage('\u0001') as (user,query,id);
query0 = group clicks by query;
query1 = foreach query0 {
distinct_id = DISTINCT clicks.id;
distinct_user = DISTINCT clicks.user;
count = COUNT(distinct_user);
generate count as count,group,distinct_id; }
store query1 into 'query.out' using PigStorage('|');
{code}
The Mapper's fail in the quick sort phase with the following error message:
{quote}
java.lang.NegativeArraySizeException at
org.apache.pig.data.BinInterSedes$BinInterSedesTupleRawComparator.compareBinInterSedesDatum(BinInterSedes.java:782)
at
org.apache.pig.data.BinInterSedes$BinInterSedesTupleRawComparator.compareBinSedesTuple(BinInterSedes.java:662)
at
org.apache.pig.data.BinInterSedes$BinInterSedesTupleRawComparator.compare(BinInterSedes.java:623)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigSecondaryKeyComparator.compare(PigSecondaryKeyComparator.java:78)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.compare(MapTask.java:995)
at org.apache.hadoop.util.QuickSort.sortInternal(QuickSort.java:95) at
org.apache.hadoop.util.QuickSort.sort(QuickSort.java:59) at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpill(MapTask.java:1281)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1182)
at org.apache.hadoop.mapred.MapTask$NewOutputCollector.close(MapTask.java:608)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:676) at
org.apache.hadoop.mapred.MapTask.run(MapTask.java:335) at
org.apache.hadoop.mapred.Child$4.run(Child.java:242) at
java.security.AccessController.doPrivileged(Native Method) at
javax.security.auth.Subject.doAs(Subject.java:396) at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1045)
at org.apache.hadoop.mapred.Child.main(Child.java:236)
Viraj
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