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https://issues.apache.org/jira/browse/HIVE-10729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14597984#comment-14597984
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Gunther Hagleitner commented on HIVE-10729:
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[~mmccline] the test on this bug doesn't happen anymore but there is:
https://issues.apache.org/jira/browse/HIVE-11051. The attached test on that bug
used to be fixed with this patch here. It might makes sense to resolve this one
and move the code over to HIVE-11051 if that's the case.
> Query failed when select complex columns from joinned table (tez map join
> only)
> -------------------------------------------------------------------------------
>
> Key: HIVE-10729
> URL: https://issues.apache.org/jira/browse/HIVE-10729
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 1.2.0
> Reporter: Selina Zhang
> Assignee: Matt McCline
> Attachments: HIVE-10729.03.patch, HIVE-10729.1.patch,
> HIVE-10729.2.patch
>
>
> When map join happens, if projection columns include complex data types,
> query will fail.
> Steps to reproduce:
> {code:sql}
> hive> set hive.auto.convert.join;
> hive.auto.convert.join=true
> hive> desc foo;
> a array<int>
> hive> select * from foo;
> [1,2]
> hive> desc src_int;
> key int
> value string
> hive> select * from src_int where key=2;
> 2 val_2
> hive> select * from foo join src_int src on src.key = foo.a[1];
> {code}
> Query will fail with stack trace
> {noformat}
> Caused by: java.lang.ClassCastException:
> org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryArray cannot be cast to
> [Ljava.lang.Object;
> at
> org.apache.hadoop.hive.serde2.objectinspector.StandardListObjectInspector.getList(StandardListObjectInspector.java:111)
> at
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serialize(LazySimpleSerDe.java:314)
> at
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serializeField(LazySimpleSerDe.java:262)
> at
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.doSerialize(LazySimpleSerDe.java:246)
> at
> org.apache.hadoop.hive.serde2.AbstractEncodingAwareSerDe.serialize(AbstractEncodingAwareSerDe.java:50)
> at
> org.apache.hadoop.hive.ql.exec.FileSinkOperator.process(FileSinkOperator.java:692)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:837)
> at
> org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:88)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:837)
> at
> org.apache.hadoop.hive.ql.exec.CommonJoinOperator.internalForward(CommonJoinOperator.java:644)
> at
> org.apache.hadoop.hive.ql.exec.CommonJoinOperator.genAllOneUniqueJoinObject(CommonJoinOperator.java:676)
> at
> org.apache.hadoop.hive.ql.exec.CommonJoinOperator.checkAndGenObject(CommonJoinOperator.java:754)
> at
> org.apache.hadoop.hive.ql.exec.MapJoinOperator.process(MapJoinOperator.java:386)
> ... 23 more
> {noformat}
> Similar error when projection columns include a map:
> {code:sql}
> hive> CREATE TABLE test (a INT, b MAP<INT, STRING>) STORED AS ORC;
> hive> INSERT OVERWRITE TABLE test SELECT 1, MAP(1, "val_1", 2, "val_2") FROM
> src LIMIT 1;
> hive> select * from src join test where src.key=test.a;
> {code}
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