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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
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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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