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Posted to issues@flink.apache.org by "tartarus (Jira)" <ji...@apache.org> on 2022/04/25 08:27:00 UTC

[jira] [Created] (FLINK-27386) throw NPE if multi MAPJOIN hint union all

tartarus created FLINK-27386:
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             Summary: throw NPE if multi MAPJOIN hint union all
                 Key: FLINK-27386
                 URL: https://issues.apache.org/jira/browse/FLINK-27386
             Project: Flink
          Issue Type: Sub-task
          Components: Connectors / Hive
    Affects Versions: 1.13.1, 1.15.0
            Reporter: tartarus


We can reproduce through a UT

Add test case in HiveDialectITCase
{code:java}
@Test
public void testHiveMultiMapJoinUnionAll() {
    tableEnv.executeSql("create table t1 (id bigint, name string)");
    tableEnv.executeSql("create table t2 (id bigint, name string)");
    tableEnv.executeSql("select /*+ mapjoin(t2) */ t1.id from t1 join t2 on t1.id = t2.id union all select /*+ mapjoin(t2) */ t1.id from t1 join t2 on t1.name = t2.name");
} {code}



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