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From Henry Robinson <>
Subject Re: impala metric should support manual opening and closing function, not always running
Date Mon, 28 Mar 2016 23:49:33 GMT
Hi Zhen -

(Please use for your technical questions,

Yes, the metrics have lots of locks. We thought about moving them to atomic
operations (, but for now
they don't show up in our profiles as a significant consumer of CPU cycles
(the locks are rarely contended).


On 28 March 2016 at 00:42, zhen <> wrote:

>   impala metric have lots of lock , I think some info only trace query use
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