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From "Matt McCline (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-10729) Query failed when select complex columns from joinned table (tez map join only)
Date Tue, 29 Mar 2016 07:53:25 GMT

     [ https://issues.apache.org/jira/browse/HIVE-10729?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matt McCline updated HIVE-10729:
--------------------------------
    Fix Version/s: 2.1.0

> 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
>             Fix For: 2.1.0
>
>         Attachments: HIVE-10729.03.patch, HIVE-10729.04.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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