What is the use of batch and move_policy = sinkhole?

[VijaySrrie]

Hi All,

What is the use of 

move_policy = sinkhole

and on which scenario we will use batch (Batch will index the file and delete but in which application or server this should be used?) 

[richgalloway]

The move_policy setting is required with a batch input as a way of making sure the admin understands what he or she is doing.  A batch input might be used to index a file that will not be updated.

[VijaySrrie]

what happens when move_policy setting is not given in the batch config?

[richgalloway]

I believe the batch input will be ignored if move_policy is missing.