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From Josh Elser <>
Subject Re: tserver.mutation.queue.max default in 1.5
Date Fri, 25 Jul 2014 02:09:33 GMT
Thanks for your feedback everyone. I created ACCUMULO-3018 to change 
this default before 1.5.2 comes out.

On 7/23/14, 4:36 PM, Josh Elser wrote:
> I started running some tests against 1.5.2 today and was baffled for a
> few hours with horrid ingest performance (~30% of what I expected).
> After staring at configs for a while, I finally realized it was because
> I didn't increase tserver.mutation.queue.max from the default of 256k.
> Sure enough, this resulted in speeds that I expected.
> I see that in 1.6.0, the default value for this was increase from 256K
> to 1M (in ACCUMULO-1905). I know we have it written down in the release
> notes, but I think the likelihood of causing terrible performance for
> users is much greater than causing OOMEs (or similar increased memory
> footprint) problems for users. I would like to change the default for
> 1.5.2 to 1M to match 1.6.0.
> Thoughts/worries/complaints?

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