[jira] [Created] (HIVE-25410) CommonMergeJoinOperator fails when a join key is ARRAY with arbitrary size

["okumin (Jira)" <ji...@apache.org>]

okumin created HIVE-25410:
-----------------------------

             Summary: CommonMergeJoinOperator fails when a join key is ARRAY with arbitrary size
                 Key: HIVE-25410
                 URL: https://issues.apache.org/jira/browse/HIVE-25410
             Project: Hive
          Issue Type: Bug
          Components: Hive
            Reporter: okumin
            Assignee: okumin
             Fix For: 4.0.0


Thanks to HIVE-24883, CommonMergeJoinOperator can handle ARRAY or STRUCT types as a JOIN key.

There are corner cases where CommonMergeJoinOperator fails with `ArrayIndexOutOfBoundsException`.

 

This is a simple case.
{code:java}
SET hive.auto.convert.join=false;
CREATE TABLE table_list_types (id int, key array<int>);
INSERT INTO table_list_types VALUES (1, array(1, 2)), (2, array(1, 2)), (3, array(1, 2, 3)), (4, array(1, 2, 3));
SELECT * FROM table_list_types t1 INNER JOIN table_list_types t2 ON t1.key = t2.key; {code}
With 69c97c26ac68a245f4d327cc2f7b3a2333f8fa84, the following error happened.
{code:java}
Caused by: java.lang.ArrayIndexOutOfBoundsException: 2
	at org.apache.hadoop.hive.ql.exec.HiveStructComparator.compare(HiveStructComparator.java:57)
	at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.compareKey(CommonMergeJoinOperator.java:629)
	at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.compareKeys(CommonMergeJoinOperator.java:597)
	at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.processKey(CommonMergeJoinOperator.java:566)
	at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.process(CommonMergeJoinOperator.java:249)
	at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource$GroupIterator.next(ReduceRecordSource.java:370)
	... 26 more {code}



--
This message was sent by Atlassian Jira
(v8.3.4#803005)