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From "Josh Elser (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-3477) Evaluate use of TThreadedSelectorServer
Date Tue, 13 Jan 2015 21:24:34 GMT


Josh Elser commented on ACCUMULO-3477:

Left this assigned to myself because I'd like to work on it, but if someone has cycles before
I do to look at it, please feel free to reassign it to yourself (or ask and I'll assign it
if you don't have karma).

> Evaluate use of TThreadedSelectorServer
> ---------------------------------------
>                 Key: ACCUMULO-3477
>                 URL:
>             Project: Accumulo
>          Issue Type: New Feature
>          Components: master, tserver
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>             Fix For: 1.7.0
> I re-read today,
specifically the section on thshaserver vs tthreadedselectorserver.
> {quote}
> TThreadedSelectorServer performs better than THsHaServer when the network io is the bottleneck
> {quote}
> This made me think that in read-heavy environments, we may benefit from using the TThreadedSelectorServer
instead of the THsHaServer. I know from previous experiments that we can spend a significant
amount of time for a query just sending bytes over the wire from server(s) to a client. Improving
this case may have benefit.
> Like THsHaServer, TThreadedSelectorServer relies on the TFramedTransport, so this is
only relevant for non-SSL and non-SASL cases.

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