accumulo-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Bill Havanki <bhava...@clouderagovt.com>
Subject Re: tserver.mutation.queue.max default in 1.5
Date Wed, 23 Jul 2014 21:43:43 GMT
+1


On Wed, Jul 23, 2014 at 4:36 PM, Josh Elser <josh.elser@gmail.com> 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?
>



-- 
// Bill Havanki
// Solutions Architect, Cloudera Govt Solutions
// 443.686.9283

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message