[jira] [Created] (HBASE-25839) Bulk Import fails with java.io.IOException: Type mismatch in value from map

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

ZFabrik created HBASE-25839:
-------------------------------

             Summary: 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
    Affects Versions: 2.2.5
            Reporter: ZFabrik


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|https://github.com/apache/hbase/blob/f76a601273e834267b55c0cda12474590283fd4c/hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/Import.java#L315] 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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