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From "Janne Jalkanen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6102) CassandraStorage broken for bigints and ints
Date Sat, 28 Sep 2013 06:03:06 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13780719#comment-13780719
] 

Janne Jalkanen commented on CASSANDRA-6102:
-------------------------------------------

Confirmed working; result for the test case above is now (Pig 0.11.1 and patched 1.2 latest)

grunt> testc = LOAD 'cassandra://keyspace/testc' USING CassandraStorage();
grunt> dump testc;
(foo,(ivalue,10),(svalue,bar),(value,65),{})

Thank you!
                
> CassandraStorage broken for bigints and ints
> --------------------------------------------
>
>                 Key: CASSANDRA-6102
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6102
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>         Environment: Cassandra 1.2.9 & 1.2.10, Pig 0.11.1, OSX 10.8.x
>            Reporter: Janne Jalkanen
>            Assignee: Alex Liu
>         Attachments: 6102-1.2-branch.txt
>
>
> I am seeing something rather strange in the way Cass 1.2 + Pig seem to handle integer
values.
> Setup: Cassandra 1.2.10, OSX 10.8, JDK 1.7u40, Pig 0.11.1.  Single node for testing this.

> First a table:
> {noformat}
> > CREATE TABLE testc (
>  key text PRIMARY KEY,
>  ivalue int,
>  svalue text,
>  value bigint
> ) WITH COMPACT STORAGE;
> > insert into testc (key,ivalue,svalue,value) values ('foo',10,'bar',65);
> > select * from testc;
> key | ivalue | svalue | value
> -----+--------+--------+-------
> foo |     10 |    bar |     65
> {noformat}
> For my Pig setup, I then use libraries from different C* versions to actually talk to
my database (which stays on 1.2.10 all the time).
> Cassandra 1.0.12 (using cassandra_storage.jar):
> {noformat}
> testc = LOAD 'cassandra://keyspace/testc' USING CassandraStorage();
> dump testc
> (foo,(svalue,bar),(ivalue,10),(value,65),{})
> {noformat}
> Cassandra 1.1.10:
> {noformat}
> testc = LOAD 'cassandra://keyspace/testc' USING CassandraStorage();
> dump testc
> (foo,(svalue,bar),(ivalue,10),(value,65),{})
> {noformat}
> Cassandra 1.2.10:
> {noformat}
> (testc = LOAD 'cassandra://keyspace/testc' USING CassandraStorage();
> dump testc
> foo,{(ivalue,
> ),(svalue,bar),(value,A)})
> {noformat}
> To me it appears that ints and bigints are interpreted as ascii values in cass 1.2.10.
 Did something change for CassandraStorage, is there a regression, or am I doing something
wrong?  Quick perusal of the JIRA didn't reveal anything that I could directly pin on this.
> Note that using compact storage does not seem to affect the issue, though it obviously
changes the resulting pig format.
> In addition, trying to use Pygmalion 
> {noformat}
> tf = foreach testc generate key, flatten(FromCassandraBag('ivalue,svalue,value',columns))
as (ivalue:int,svalue:chararray,lvalue:long);
> dump tf
> (foo,
> ,bar,A)
> {noformat}
> So no help there. Explicitly casting the values to (long) or (int) just results in a
ClassCastException.

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