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From "Aihua Xu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10321) Execution error for Parquet table and GROUP BY involving VARCHAR data type
Date Wed, 05 Aug 2015 14:05:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14658257#comment-14658257
] 

Aihua Xu commented on HIVE-10321:
---------------------------------

[~rnpridgeon] the issue should be fixed by HIVE-9450. Does your branch have that change?

> Execution error for Parquet table and GROUP BY involving VARCHAR data type
> --------------------------------------------------------------------------
>
>                 Key: HIVE-10321
>                 URL: https://issues.apache.org/jira/browse/HIVE-10321
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Ryan Pridgeon
>
> When executing a SELECT Distinct on a field of type VARCHAR hive fails with the following
error:
> FATAL [main] org.apache.hadoop.hive.ql.exec.mr.ExecMapper: org.apache.hadoop.hive.ql.metadata.HiveException:
Hive Runtime Error while processing row {"hp_process_date":null,"dw_sequence_nbr":null,"de2_card_nbr":"ACTUAL
VALUE MASKED BY JAA","pds1_paypass_acct_nbr":null,"dw_process_date":"2014-01-10"}
> at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:549)
> at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:177)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:450)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1642)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:163)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.ClassCastException:
org.apache.hadoop.io.Text cannot be cast to org.apache.hadoop.hive.serde2.io.HiveVarcharWritable
> at org.apache.hadoop.hive.ql.exec.GroupByOperator.processOp(GroupByOperator.java:808)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
> at org.apache.hadoop.hive.ql.exec.SelectOperator.processOp(SelectOperator.java:87)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
> at org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:92)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:796)
> at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:539)
> ... 9 more
> Caused by: java.lang.ClassCastException: org.apache.hadoop.io.Text cannot be cast to
org.apache.hadoop.hive.serde2.io.HiveVarcharWritable
> at org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableHiveVarcharObjectInspector.copyObject(WritableHiveVarcharObjectInspector.java:109)
> at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.copyToStandardObject(ObjectInspectorUtils.java:309)
> at org.apache.hadoop.hive.ql.exec.KeyWrapperFactory$ListKeyWrapper.deepCopyElements(KeyWrapperFactory.java:150)
> at org.apache.hadoop.hive.ql.exec.KeyWrapperFactory$ListKeyWrapper.deepCopyElements(KeyWrapperFactory.java:142)
> at org.apache.hadoop.hive.ql.exec.KeyWrapperFactory$ListKeyWrapper.copyKey(KeyWrapperFactory.java:119)
> at org.apache.hadoop.hive.ql.exec.GroupByOperator.processHashAggr(GroupByOperator.java:821)
> at org.apache.hadoop.hive.ql.exec.GroupByOperator.processKey(GroupByOperator.java:735)
> at org.apache.hadoop.hive.ql.exec.GroupByOperator.processOp(GroupByOperator.java:803)
> I understand that Varchar support with parquet was introduced in Hive 0.14: 
> https://cwiki.apache.org/confluence/display/Hive/Parquet
> This issue seems similar to:
> https://issues.apache.org/jira/browse/HIVE-9371
> Which was closed as a duplicate. Which I believe was marked as such do to 
> https://issues.apache.org/jira/browse/HIVE-7735
> Even with this fix however I am experiencing the issue. 
> Thank you, 
> Ryan



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