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From David Medinets <david.medin...@gmail.com>
Subject Re: tserver.readahead.concurrent.max set to 64 but only running 32 at most.
Date Thu, 16 May 2013 18:14:56 GMT
Thanks. I double-checked our system by running config in the shell (as
opposed looking in the configuration file). The config command reported a
'system' override of 32. So that explains the limit that I saw. I'm not
sure where that 'system' override came from.


On Thu, May 16, 2013 at 1:25 PM, Eric Newton <eric.newton@gmail.com> wrote:

> tserver.scan.files.open.max
>
>
>
> On Wed, May 15, 2013 at 4:44 PM, David Medinets <david.medinets@gmail.com
> >wrote:
>
> > When tserver.readahead.concurrent.max was set to its default setting, the
> > load on our tservers was fairly low. So I changed accumulo-site.xml so
> the
> > max is 64. (Go for the gusto!) Then restarted the tservers to ensure the
> > change was picked up.
> >
> > New queries are now running 32 concurrent scans on each server with
> several
> > scans waiting in the queue. Is there some other accumulo parameter that I
> > need to set to get more than 32 concurrent scans? Is something else
> > affecting the scans?
> >
>

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