Interface org.apache.pig.OverwritableStoreFunc

Changed Methods
void cleanupOutput(POStore, Job)	Changed from non-abstract to abstract.	This method is called to cleanup the store/output location of this StoreFunc
boolean shouldOverwrite()	Changed from non-abstract to abstract.	This method is called by the Pig runtime to determine whether to ignore output validation problems (see PigOutputFormat#checkOutputSpecs and an to delete the existing output.