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https://issues.apache.org/jira/browse/HIVE-8678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14635548#comment-14635548
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Sushanth Sowmyan commented on HIVE-8678:
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What storage format are you using for the table in question? (i.e. is it Text,
RCFile, ORC, something else?)
> Pig fails to correctly load DATE fields using HCatalog
> ------------------------------------------------------
>
> Key: HIVE-8678
> URL: https://issues.apache.org/jira/browse/HIVE-8678
> Project: Hive
> Issue Type: Bug
> Components: HCatalog
> Affects Versions: 0.13.1
> Reporter: Michael McLellan
> Assignee: Sushanth Sowmyan
>
> Using:
> Hadoop 2.5.0-cdh5.2.0
> Pig 0.12.0-cdh5.2.0
> Hive 0.13.1-cdh5.2.0
> When using pig -useHCatalog to load a Hive table that has a DATE field, when
> trying to DUMP the field, the following error occurs:
> {code}
> 2014-10-30 22:58:05,469 [main] ERROR
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher -
> org.apache.pig.backend.executionengine.ExecException: ERROR 6018: Error
> converting read value to tuple
> at
> org.apache.hive.hcatalog.pig.HCatBaseLoader.getNext(HCatBaseLoader.java:76)
> at org.apache.hive.hcatalog.pig.HCatLoader.getNext(HCatLoader.java:58)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigRecordReader.nextKeyValue(PigRecordReader.java:211)
> at
> org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.nextKeyValue(MapTask.java:553)
> at
> org.apache.hadoop.mapreduce.task.MapContextImpl.nextKeyValue(MapContextImpl.java:80)
> at
> org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.nextKeyValue(WrappedMapper.java:91)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:784)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
> 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:1614)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:163)
> Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to
> java.sql.Date
> at
> org.apache.hive.hcatalog.pig.PigHCatUtil.extractPigObject(PigHCatUtil.java:420)
> at
> org.apache.hive.hcatalog.pig.PigHCatUtil.transformToTuple(PigHCatUtil.java:457)
> at
> org.apache.hive.hcatalog.pig.PigHCatUtil.transformToTuple(PigHCatUtil.java:375)
> at
> org.apache.hive.hcatalog.pig.HCatBaseLoader.getNext(HCatBaseLoader.java:64)
> 2014-10-30 22:58:05,469 [main] ERROR
> org.apache.pig.tools.pigstats.SimplePigStats - ERROR 6018: Error converting
> read value to tuple
> {code}
> It seems to be occuring here:
> https://github.com/apache/hive/blob/trunk/hcatalog/hcatalog-pig-adapter/src/main/java/org/apache/hive/hcatalog/pig/PigHCatUtil.java#L433
> and that it should be:
> {code}Date d = Date.valueOf(o);{code}
> instead of
> {code}Date d = (Date) o;{code}
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