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From "Sheetal Gosrani (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-6513) CqlPaging for hadoop fails when writetime(column_name) is set as one of the input columns
Date Thu, 19 Dec 2013 20:51:07 GMT
Sheetal Gosrani created CASSANDRA-6513:
------------------------------------------

             Summary: CqlPaging for hadoop fails when writetime(column_name) is set as one
of the input columns
                 Key: CASSANDRA-6513
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6513
             Project: Cassandra
          Issue Type: Bug
          Components: Hadoop
         Environment: ubuntu 12.04, hadoop 1.0.3, cassandra-1.2.13
            Reporter: Sheetal Gosrani
             Fix For: 1.2.13


InvalidRequestException thrown when running a hadoop job with CqlPaging with writetime(column_name)
set as one of the input columns.

java.lang.RuntimeException
        at org.apache.cassandra.hadoop.cql3.CqlPagingRecordReader$RowIterator.executeQuery(CqlPagingRecordReader.java:665)
        at org.apache.cassandra.hadoop.cql3.CqlPagingRecordReader$RowIterator.<init>(CqlPagingRecordReader.java:301)
        at org.apache.cassandra.hadoop.cql3.CqlPagingRecordReader.initialize(CqlPagingRecordReader.java:167)
        at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:522)
        at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
        at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
        at org.apache.hadoop.mapred.Child.main(Child.java:249)
Caused by: InvalidRequestException(why:Undefined name WRITETIME(foo) in selection clause)
        at org.apache.cassandra.thrift.Cassandra$prepare_cql3_query_result.read(Cassandra.java:40395)
        at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
        at org.apache.cassandra.thrift.Cassandra$Client.recv_prepare_cql3_query(Cassandra.java:1660)
        at org.apache.cassandra.thrift.Cassandra$Client.prepare_cql3_query(Cassandra.java:1646)
        at org.apache.cassandra.hadoop.cql3.CqlPagingRecordReader$RowIterator.prepareQuery(CqlPagingRecordReader.java:605)
        at org.apache.cassandra.hadoop.cql3.CqlPagingRecordReader$RowIterator.executeQuery(CqlPagingRecordReader.java:635)
        ... 10 more

The hadoop config lines look as such:
//read input from cassandra column family using CQL Input Format
        job.setInputFormatClass(CqlPagingInputFormat.class);
        ConfigHelper.setInputColumnFamily(job.getConfiguration(), KEYSPACE, INPUT_COLUMN_FAMILY);
        ConfigHelper.setInputRpcPort(job.getConfiguration(), "9160");
        ConfigHelper.setInputInitialAddress(job.getConfiguration(), HOST);
        ConfigHelper.setInputPartitioner(job.getConfiguration(), "RandomPartitioner");
        CqlConfigHelper.setInputColumns(job.getConfiguration(), "foo,WRITETIME(foo)");
        job.getConfiguration().set("cassandra.consistencylevel.read", READ_CONSISTENCY);
        CqlConfigHelper.setInputCQLPageRowSize(job.getConfiguration(), "3000");




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