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From "Marco Cova (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-4181) Hadoop on CF with ColumnCounter columns fails
Date Mon, 23 Apr 2012 18:38:33 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-4181?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Marco Cova updated CASSANDRA-4181:
----------------------------------

    Attachment: cassandra-4181.patch

Small fix: unthriftify the column before accessing its name
                
> Hadoop on CF with ColumnCounter columns fails
> ---------------------------------------------
>
>                 Key: CASSANDRA-4181
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4181
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>    Affects Versions: 1.1.0
>            Reporter: Marco Cova
>            Priority: Minor
>         Attachments: cassandra-4181.patch
>
>
> Accessing CounterColumn from Hadoop fails with an exception:
> {noformat} 
> java.lang.RuntimeException: java.lang.NullPointerException
>         at org.apache.cassandra.hadoop.ColumnFamilyRecordReader$WideRowIterator.maybeInit(ColumnFamilyRecordReader.java:456)
>         at org.apache.cassandra.hadoop.ColumnFamilyRecordReader$WideRowIterator.computeNext(ColumnFamilyRecordReader.java:462)
>         at org.apache.cassandra.hadoop.ColumnFamilyRecordReader$WideRowIterator.computeNext(ColumnFamilyRecordReader.java:409)
>         at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
>         at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
>         at org.apache.cassandra.hadoop.ColumnFamilyRecordReader.nextKeyValue(ColumnFamilyRecordReader.java:184)
>         at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.nextKeyValue(MapTask.java:532)
>         at org.apache.hadoop.mapreduce.MapContext.nextKeyValue(MapContext.java:67)
>         at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:143)
>         at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
>         at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
>         at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
> Caused by: java.lang.NullPointerException
>         at org.apache.cassandra.hadoop.ColumnFamilyRecordReader$WideRowIterator$WideColumnIterator.computeNext(ColumnFamilyRecordReader.java:500)
>         at org.apache.cassandra.hadoop.ColumnFamilyRecordReader$WideRowIterator$WideColumnIterator.computeNext(ColumnFamilyRecordReader.java:472)
>         at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
>         at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
>         at com.google.common.collect.Iterators$PeekingImpl.hasNext(Iterators.java:1080)
>         at org.apache.cassandra.hadoop.ColumnFamilyRecordReader$WideRowIterator.maybeInit(ColumnFamilyRecordReader.java:449)
>         ... 11 more
> {noformat}

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