[jira] [Commented] (ORC-1167) Support orc.row.batch.size configuration

["Dongjoon Hyun (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ORC-1167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17533363#comment-17533363 ] 

Dongjoon Hyun commented on ORC-1167:
------------------------------------

Thank you for filing a JIRA and making a PR, [~dzcxzl]

> Support orc.row.batch.size configuration
> ----------------------------------------
>
>                 Key: ORC-1167
>                 URL: https://issues.apache.org/jira/browse/ORC-1167
>             Project: ORC
>          Issue Type: Improvement
>            Reporter: dzcxzl
>            Priority: Minor
>
> Now create OrcMapreduceRecordReader, the default value of batch size is 1024, we can support the configuration in Reader.Options.
>  
> If we read 1024 relatively large strings, we might get NegativeArraySizeException, but no configuration to reduce batch size.
>  
> {code:java}
> java.lang.NegativeArraySizeException
> 	at org.apache.orc.impl.TreeReaderFactory$BytesColumnVectorUtil.commonReadByteArrays(TreeReaderFactory.java:1544)
> 	at org.apache.orc.impl.TreeReaderFactory$BytesColumnVectorUtil.readOrcByteArrays(TreeReaderFactory.java:1566)
> 	at org.apache.orc.impl.TreeReaderFactory$StringDirectTreeReader.nextVector(TreeReaderFactory.java:1662)
> 	at org.apache.orc.impl.TreeReaderFactory$StringTreeReader.nextVector(TreeReaderFactory.java:1508)
> 	at org.apache.orc.impl.TreeReaderFactory$StructTreeReader.nextBatch(TreeReaderFactory.java:2047)
> 	at org.apache.orc.impl.RecordReaderImpl.nextBatch(RecordReaderImpl.java:1219)
> 	at org.apache.orc.mapreduce.OrcMapreduceRecordReader.ensureBatch(OrcMapreduceRecordReader.java:84)
> 	at org.apache.orc.mapreduce.OrcMapreduceRecordReader.nextKeyValue(OrcMapreduceRecordReader.java:102)
> 	at org.apache.spark.sql.execution.datasources.RecordReaderIterator.hasNext(RecordReaderIterator.scala:39) {code}
>  



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