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Date: Thu, 2 Apr 2015 23:30:02 +0000 (UTC)
From: "Prasanth Jayachandran (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HIVE-10158) LLAP: Varchar columns are not
 handled in encoded readers
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    [ https://issues.apache.org/jira/browse/HIVE-10158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14393724#comment-14393724 ] 

Prasanth Jayachandran commented on HIVE-10158:
----------------------------------------------

This should mostly go away after HIVE-10042 gets into trunk.

> LLAP: Varchar columns are not handled in encoded readers
> --------------------------------------------------------
>
>                 Key: HIVE-10158
>                 URL: https://issues.apache.org/jira/browse/HIVE-10158
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: llap
>            Reporter: Gopal V
>            Assignee: Prasanth Jayachandran
>             Fix For: llap
>
>         Attachments: HIVE-10158.1.patch
>
>
> ORC Varchar columns can't be read off the cache
> {code}
> Caused by: java.io.IOException: java.lang.ClassCastException: org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$VarcharTreeReader cannot be cast to org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$StringDictionaryTreeReader
>         at org.apache.hadoop.hive.llap.io.api.impl.LlapInputFormat$LlapRecordReader.rethrowErrorIfAny(LlapInputFormat.java:249)
>         at org.apache.hadoop.hive.llap.io.api.impl.LlapInputFormat$LlapRecordReader.nextCvb(LlapInputFormat.java:201)
>         at org.apache.hadoop.hive.llap.io.api.impl.LlapInputFormat$LlapRecordReader.next(LlapInputFormat.java:140)
>         at org.apache.hadoop.hive.llap.io.api.impl.LlapInputFormat$LlapRecordReader.next(LlapInputFormat.java:96)
>         at org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.doNext(HiveContextAwareRecordReader.java:350)
>         ... 22 more
> Caused by: java.lang.ClassCastException: org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$VarcharTreeReader cannot be cast to org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl$StringDictionaryTreeReader
>         at org.apache.hadoop.hive.llap.io.decode.orc.stream.readers.CharacterStreamReader.seek(CharacterStreamReader.java:84)
>         at org.apache.hadoop.hive.llap.io.decode.OrcEncodedDataConsumer.createTreeReaders(OrcEncodedDataConsumer.java:332)
>         at org.apache.hadoop.hive.llap.io.decode.OrcEncodedDataConsumer.decodeBatch(OrcEncodedDataConsumer.java:98)
>         at org.apache.hadoop.hive.llap.io.decode.EncodedDataConsumer.consumeData(EncodedDataConsumer.java:108)
>         at org.apache.hadoop.hive.llap.io.decode.EncodedDataConsumer.consumeData(EncodedDataConsumer.java:35)
>         at org.apache.hadoop.hive.ql.io.orc.EncodedReaderImpl.readEncodedColumns(EncodedReaderImpl.java:319)
>         at org.apache.hadoop.hive.llap.io.encoded.OrcEncodedDataReader.callInternal(OrcEncodedDataReader.java:278)
>         at org.apache.hadoop.hive.llap.io.encoded.OrcEncodedDataReader.callInternal(OrcEncodedDataReader.java:48)
>         at org.apache.hadoop.hive.common.CallableWithNdc.call(CallableWithNdc.java:37)
>         ... 4 more
> {code}


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