cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Brandon Williams (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3962) CassandraStorage can't cast fields from a CF correctly
Date Sun, 26 Feb 2012 21:00:52 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13216836#comment-13216836
] 

Brandon Williams commented on CASSANDRA-3962:
---------------------------------------------

I think implementing LoadCaster will fix this, but it's strange to me that pig doesn't allow
going to the other way, casting a chararray to a bytearray since that's the only thing guaranteed
to work here, in case the Bytes CF has keys that won't map to UTF8.
                
> CassandraStorage can't cast fields from a CF correctly
> ------------------------------------------------------
>
>                 Key: CASSANDRA-3962
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3962
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>    Affects Versions: 1.0.8
>         Environment: OSX 10.6.latest, Pig 0.9.2.
>            Reporter: Janne Jalkanen
>            Assignee: Brandon Williams
>              Labels: hadoop, pig
>         Attachments: test.cli, test.pig
>
>
> Included scripts demonstrate the problem.  Regardless of whether the key is cast as a
chararray or not, the Pig scripts fail with 
> {code}
> java.lang.ClassCastException: org.apache.pig.data.DataByteArray cannot be cast to java.lang.String
> 	at org.apache.pig.backend.hadoop.HDataType.getWritableComparableTypes(HDataType.java:72)
> 	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Map.collect(PigGenericMapReduce.java:117)
> 	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:269)
> 	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:262)
> 	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64)
> 	at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
> 	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
> 	at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
> {code}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message