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https://issues.apache.org/jira/browse/PIG-4023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14036854#comment-14036854
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Anup Ahire commented on PIG-4023:
---------------------------------
I can provide a patch
> BigDec/Int sort is broken
> -------------------------
>
> Key: PIG-4023
> URL: https://issues.apache.org/jira/browse/PIG-4023
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.12.0
> Reporter: Anup Ahire
>
> BigDec/Int sort seems broken. I am getting following errors.
> java.lang.ClassCastException: java.math.BigInteger incompatible with
> java.lang.Double
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigBigIntegerRawComparator.compare(PigBigIntegerRawComparator.java:99)
> at java.util.Arrays.binarySearch(Arrays.java:700)
> at java.util.Arrays.binarySearch(Arrays.java:305)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.partitioners.WeightedRangePartitioner.getPartition(WeightedRangePartitioner.java:81)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.partitioners.WeightedRangePartitioner.getPartition(WeightedRangePartitioner.java:60)
> at
> org.apache.hadoop.mapred.MapTask$NewOutputCollector.write(MapTask.java:689)
> at
> org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89)
> at
> org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.write(WrappedMapper.java:112)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Map.collect(PigGenericMapReduce.java:122)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:284)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:277)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:140)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:751)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:368)
>
> ----------------------------------------------------------------------------
> java.lang.ClassCastException: java.math.BigDecimal incompatible with
> java.lang.Double
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigBigDecimalRawComparator.compare(PigBigDecimalRawComparator.java:99)
> at java.util.Arrays.binarySearch(Arrays.java:700)
> at java.util.Arrays.binarySearch(Arrays.java:305)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.partitioners.WeightedRangePartitioner.getPartition(WeightedRangePartitioner.java:81)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.partitioners.WeightedRangePartitioner.getPartition(WeightedRangePartitioner.java:60)
> at
> org.apache.hadoop.mapred.MapTask$NewOutputCollector.write(MapTask.java:689)
> at
> org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89)
> at
> org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.write(WrappedMapper.java:112)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Map.collect(PigGenericMapReduce.java:122)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:284)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:277)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:140)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:751)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:368)
>
> PigBig(Decimal/Intger)RawComparator wrongly casts BigInteger and
> BigDecimal to Double.
> Also, Big(Decimal/Integer)Writable classes are not using buffer offset and
> length while initializing ByteArrayInputStream in compare method
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