Gopal V created HIVE-10082:
------------------------------
Summary: LLAP: UnwrappedRowContainer throws exceptions
Key: HIVE-10082
URL: https://issues.apache.org/jira/browse/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()
{code}
for (int index : valueIndex) {
if (index >= 0) {
unwrapped.add(currentKey == null ? null : currentKey[index]);
} else {
unwrapped.add(values.get(-index - 1));
}
}
{code}
{code}
Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.rangeCheck(ArrayList.java:653)
at java.util.ArrayList.get(ArrayList.java:429)
at
org.apache.hadoop.hive.ql.exec.persistence.UnwrapRowContainer.unwrap(UnwrapRowContainer.java:79)
at
org.apache.hadoop.hive.ql.exec.persistence.UnwrapRowContainer.first(UnwrapRowContainer.java:62)
at
org.apache.hadoop.hive.ql.exec.persistence.UnwrapRowContainer.first(UnwrapRowContainer.java:33)
at
org.apache.hadoop.hive.ql.exec.CommonJoinOperator.genAllOneUniqueJoinObject(CommonJoinOperator.java:670)
at
org.apache.hadoop.hive.ql.exec.CommonJoinOperator.checkAndGenObject(CommonJoinOperator.java:754)
at
org.apache.hadoop.hive.ql.exec.MapJoinOperator.process(MapJoinOperator.java:341)
{code}
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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