You're confusing how many slots of memory with the precision of the count.
We have 65536 memory slots (we use a two byte pointer to point to memory
slots).  We use a four byte value to maintain the number of populated
slots.  So the MAX_BATCH_SIZE is, in fact 65536.

--
Jacques Nadeau
CTO and Co-Founder, Dremio

On Fri, Jul 24, 2015 at 11:00 PM, Daniel Barclay <dbarc...@maprtech.com>
wrote:

> In org.apache.drill.exec.record.RecordBatch, MAX_BATCH_SIZE is 65536.
>
> Why isn't that 65535?  Is a batch size of zero not possible?
>
>
> Daniel
> --
> Daniel Barclay
> MapR Technologies
>

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