[
https://issues.apache.org/jira/browse/HBASE-25839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Pankaj Kumar resolved HBASE-25839.
----------------------------------
Fix Version/s: 2.7.0
3.0.0-beta-2
2.6.3
2.5.12
Resolution: Fixed
Pushed to branch-2.5+. Thanks [~sreenivasulureddy] and everyone for the
contribution.
> Bulk Import fails with java.io.IOException: Type mismatch in value from map
> ---------------------------------------------------------------------------
>
> Key: HBASE-25839
> URL: https://issues.apache.org/jira/browse/HBASE-25839
> Project: HBase
> Issue Type: Bug
> Components: mapreduce
> Affects Versions: 2.2.5
> Reporter: ZFabrik
> Assignee: Y. SREENIVASULU REDDY
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.7.0, 3.0.0-beta-2, 2.6.3, 2.5.12
>
>
> Bulk Import with {{-Dimport.bulk.output=/HFILES
> -Dimport.bulk.hasLargeResult=true}} always results in
> {noformat}
> Error: java.io.IOException: Type mismatch in value from map: expected
> org.apache.hadoop.hbase.util.MapReduceExtendedCell, received
> org.apache.hadoop.hbase.IndividualBytesFieldCell
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.collect(MapTask.java:1077)
> at
> org.apache.hadoop.mapred.MapTask$NewOutputCollector.write(MapTask.java:715)
> at
> org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89)
> at
> org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.write(WrappedMapper.java:112)
> at
> org.apache.hadoop.hbase.mapreduce.Import$CellSortImporter.map(Import.java:423)
> at
> org.apache.hadoop.hbase.mapreduce.Import$CellSortImporter.map(Import.java:394)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:175)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1844)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:169)
> {noformat}
> The Problem is that in
> {{org.apache.hadoop.hbase.mapreduce.Import.CellSortImporter#map}} the
> {{Cell}} coming from {{value.rawCells()}} (which is of type
> {{org.apache.hadoop.hbase.IndividualBytesFieldCell}}) is directly written to
> the context without wrapping it into {{MapReduceExtendedCell}} (like it
> happens at {{CellImporter#map}}).
> IMHO [line
> 423|https://github.com/apache/hbase/blob/f76a601273e834267b55c0cda12474590283fd4c/hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/Import.java#L423]
> must look like this:
> {code:java}
> context.write(new CellWritableComparable(ret), new
> MapReduceExtendedCell(ret));
> {code}
> Furthermore it seems to me that this is also wrong in all subsequent versions
>
>
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