HBaseStorage not casting correctly
----------------------------------
Key: PIG-2611
URL: https://issues.apache.org/jira/browse/PIG-2611
Project: Pig
Issue Type: Bug
Affects Versions: 0.9.2
Environment: Ubuntu 11.10, Hadoop 0.20.2, HBase 0.92.0
Reporter: David Arthur
Priority: Minor
When loading data into HBase with HBaseStorage, there is unexpected behavior
regarding record schema and casting.
Here is the relevant code snippet:
{code}
B = group A by (time_tuple, some_scalar);
C = foreach B {
-- UDF to generate id (bytearray)
generate id, flatten(group.$0), COUNT(A);
}
{code}
At this point the schema for C is unknown, so I declare a schema with a foreach
statement
{code}
D = foreach C generate $0 as id:bytearray, $1 as year:int, $2 as month:int, $3
as date:int, $4 as count:int;
{code}
Even though I've declared C.$4 as an int, it is still a long (from the COUNT).
When I go to insert into HBase I get a ClassCastException since the schema
(int) does not match the actual tuple value (long). I can fix this by
explicitly casting when I declare the schema.
{code}
D = foreach C generate $0 as id:bytearray, $1 as year:int, $2 as month:int, $3
as date:int, (int)$4 as count:int;
{code}
Is this expected behavior? If not, is this an HBaseStorage issue - not honoring
the schema before going off casting things?
Cheers,
David
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