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Posted to dev@impala.apache.org by Henry Robinson <he...@apache.org> on 2016/03/29 01:49:33 UTC

Re: impala metric should support manual opening and closing function， not always running

Hi Zhen -

(Please use dev@impala.incubator.apache.org for your technical questions,
see https://mail-archives.apache.org/mod_mbox/incubator-impala-dev/).

Yes, the metrics have lots of locks. We thought about moving them to atomic
operations (https://issues.cloudera.org/browse/IMPALA-2397), but for now
they don't show up in our profiles as a significant consumer of CPU cycles
(the locks are rarely contended).

Henry

On 28 March 2016 at 00:42, zhen <yy...@gmail.com> wrote:

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