Affects Version/s: None
Fix Version/s: 0.7.0
Currently, Pig places the data passed to UDFs into a bag. This can cause the process to use more memory than actually needed as in many cases it would be better to push the data one tuple at a time to the UDFs.
For the case where combiner is invoked, this might not be that important; however, for non-algebraic UDFs as well as other cases where combiner can't be used, this can provide significant memory improvement.
Another possible use case is where the data is already grouped going into pig and we don't need to group it again.
How this will effect UDF interface needs to be further discussed.
|Field||Original Value||New Value|
|Status||Open [ 1 ]||Resolved [ 5 ]|
|Resolution||Fixed [ 1 ]|
|Fix Version/s||0.7.0 [ 12314397 ]|
|Status||Resolved [ 5 ]||Closed [ 6 ]|
|Transition||Time In Source Status||Execution Times||Last Executer||Last Execution Date|
|164d 17h 35m||1||Olga Natkovich||23/Nov/09 17:26|
|171d 13h 18m||1||Daniel Dai||14/May/10 07:45|