Use Delete with write-buffer in HTable

[Lars George]

Hi Guys,

Is there a reason why Delete's are not also put on the write buffer like 
Put's and then flushed out. That way we get an implicit batch delete 
(using the new batch delete calls internally, just like the batch put 
does) and MR jobs that output Put or Delete are automatically using the 
buffer for much better performance.

I recently had an MR with 18K deletes and since batch delete was not yet 
available it crashed my job constantly because of the huge amount of RPC 
calls.

Opinions?

Lars