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From "Gopal V (JIRA)" <>
Subject [jira] [Created] (HIVE-10082) LLAP: UnwrappedRowContainer throws exceptions
Date Wed, 25 Mar 2015 05:06:52 GMT
Gopal V created HIVE-10082:

             Summary: LLAP: UnwrappedRowContainer throws exceptions
                 Key: HIVE-10082
             Project: Hive
          Issue Type: Bug
    Affects Versions: llap
            Reporter: Gopal V
             Fix For: llap

TPC-DS Query27 runs with map-joins enabled results in errors originating from these lines
in UnwrappedRowContainer::unwrap() 

   for (int index : valueIndex) {
      if (index >= 0) {
        unwrapped.add(currentKey == null ? null : currentKey[index]);
      } else {
        unwrapped.add(values.get(-index - 1));

Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
    at java.util.ArrayList.rangeCheck(
    at java.util.ArrayList.get(
    at org.apache.hadoop.hive.ql.exec.persistence.UnwrapRowContainer.unwrap(
    at org.apache.hadoop.hive.ql.exec.persistence.UnwrapRowContainer.first(
    at org.apache.hadoop.hive.ql.exec.persistence.UnwrapRowContainer.first(
    at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.genAllOneUniqueJoinObject(
    at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.checkAndGenObject(
    at org.apache.hadoop.hive.ql.exec.MapJoinOperator.process(

This is intermittent and does not cause query failures as the retries succeed, but slows down
the query by an entire wave due to the retry.

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