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From "Mohit Sabharwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7889) Query fails with char partition column
Date Wed, 27 Aug 2014 01:20:59 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14111708#comment-14111708
] 

Mohit Sabharwal commented on HIVE-7889:
---------------------------------------

Hmm, the "o" arg isn't really used anywhere. I assigned to it just to respect the "set" interface.


In PrimitiveObjectInspectorConverter.HiveCharConverter.convert(), the "hc" arg passed to set()
isn't used anywhere.
It returns HiveChar or HiveCharWritable, depending on object inspector:
  HiveCharWritable for WritableHiveCharObjectInspector 
  HiveChar for JavaHiveCharObjectInspector



> Query fails with char partition column
> --------------------------------------
>
>                 Key: HIVE-7889
>                 URL: https://issues.apache.org/jira/browse/HIVE-7889
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>            Reporter: Mohit Sabharwal
>            Assignee: Mohit Sabharwal
>         Attachments: HIVE-7889.1.patch, HIVE-7889.patch
>
>
> For a char partition column, JavaHiveCharObjectInspector attempts to cast HiveCharWritable
to HiveChar:
> {code}
> create table partition_char_1 (key string, value char(20)) partitioned by (dt char(10),
region int);
> insert overwrite table partition_char_1 partition(dt='2000-01-01', region=1)
>   select * from src tablesample (10 rows);
> select * from partition_char_1 limit 1;
> java.sql.SQLException: Error while compiling statement: FAILED: RuntimeException org.apache.hadoop.hive.ql.metadata.HiveException:
Failed with exception org.apache.hadoop.hive.serde2.io.HiveCharWritable cannot be cast to
org.apache.hadoop.hive.common.type.HiveCharjava.lang.ClassCastException: org.apache.hadoop.hive.serde2.io.HiveCharWritable
cannot be cast to org.apache.hadoop.hive.common.type.HiveChar
> 	at org.apache.hadoop.hive.serde2.objectinspector.primitive.JavaHiveCharObjectInspector.set(JavaHiveCharObjectInspector.java:67)
> 	at org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorConverter$HiveCharConverter.convert(PrimitiveObjectInspectorConverter.java:506)
> 	at org.apache.hadoop.hive.ql.exec.FetchOperator.createPartValue(FetchOperator.java:315)
> {code}



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