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https://issues.apache.org/jira/browse/TEZ-4542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17846206#comment-17846206
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László Bodor commented on TEZ-4542:
-----------------------------------
merged to master, thanks [~zhengchenyu] for the patch and [~rbalamohan] for the
review!
> Tez application may fail due to int overflow when record size is large and
> sort memory is low.
> ----------------------------------------------------------------------------------------------
>
> Key: TEZ-4542
> URL: https://issues.apache.org/jira/browse/TEZ-4542
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.9.2
> Reporter: Chenyu Zheng
> Assignee: Chenyu Zheng
> Priority: Major
> Time Spent: 2h 10m
> Remaining Estimate: 0h
>
> Tez application application fail, then found this error stack:
> {code:java}
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource$GroupIterator.next(ReduceRecordSource.java:370)
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource.pushRecord(ReduceRecordSource.java:292)
> ... 18 more
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException:
> java.lang.IllegalArgumentException
> at
> org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.process(ReduceSinkOperator.java:402)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:907)
> at
> org.apache.hadoop.hive.ql.exec.CommonJoinOperator.internalForward(CommonJoinOperator.java:643)
> at
> org.apache.hadoop.hive.ql.exec.CommonJoinOperator.genAllOneUniqueJoinObject(CommonJoinOperator.java:675)
> at
> org.apache.hadoop.hive.ql.exec.CommonJoinOperator.checkAndGenObject(CommonJoinOperator.java:753)
> at
> org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.joinObject(CommonMergeJoinOperator.java:314)
> at
> org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.joinOneGroup(CommonMergeJoinOperator.java:277)
> at
> org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.joinOneGroup(CommonMergeJoinOperator.java:270)
> at
> org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.process(CommonMergeJoinOperator.java:256)
> at
> org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource$GroupIterator.next(ReduceRecordSource.java:361)
> ... 19 more
> Caused by: java.lang.IllegalArgumentException
> at java.nio.Buffer.position(Buffer.java:244)
> at
> org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter$SortSpan.(PipelinedSorter.java:936)
> at
> org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter.sort(PipelinedSorter.java:350)
> at
> org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter.collect(PipelinedSorter.java:406)
> at
> org.apache.tez.runtime.library.common.sort.impl.PipelinedSorter.write(PipelinedSorter.java:379)
> at
> org.apache.tez.runtime.library.output.OrderedPartitionedKVOutput$1.write(OrderedPartitionedKVOutput.java:167)
> at
> org.apache.hadoop.hive.ql.exec.tez.TezProcessor$TezKVOutputCollector.collect(TezProcessor.java:204)
> at
> org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.collect(ReduceSinkOperator.java:541)
> at
> org.apache.hadoop.hive.ql.exec.ReduceSinkOperator.process(ReduceSinkOperator.java:385)
> ... 28 more {code}
> After adding the debug log, it is easy to find this problem. The variable
> `dataSize` in {{{}PipelinedSorter::{}}}SortSpan is overflow.
> This problem will be triggered if the following two conditions are met at the
> same time:
> * Too many IO for vertex, causing the memory allocated to each I/O for
> sorting to be too small.
> * When average record size is larger than 2K, `dataSize` in
> {{{}PipelinedSorter::{}}}SortSpan is overflow will be overflow, will not
> try to allocate less meta space. Then raise exception.
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