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From Юрий <jury.gerzhedow...@gmail.com>
Subject Query history statistics API
Date Thu, 20 Dec 2018 12:19:01 GMT
Hi Igniters,

As of now we have query statistics (
*org.apache.ignite.IgniteCache#queryMetrics*) , but it's look a little bit
wrong, due to at least few reasons:
1) Duration execution it just time between start execution and return
cursor to client and doesn't include all life time of query.
2) It doesn't know about multistatement queries. Such queries participate
in statistics as single query without splitting.
3) API to access the statistics expose as depend on cache, however query
don't have such dependency.

I want to create parallel similar realization as we already have.
But it should fix all above mistakes:
1) Use new infrastructure of tracking running queries developed under
IGNITE-10621 <https://issues.apache.org/jira/browse/IGNITE-10621> and
update statistics when query really finished, so we will have real time of
execution.
2) The new infrastructure support multistatement queries. And all part of
such queries will be tracked independent each other.
3) Expose API on upper level then it placed now. Seems it should be on
Ignite level. But I'm not fully sure.

Old API will be marked as deprecated and could be deleted further, may be
in 3.0 version.

I created the corresponding JIRA ticket - IGNITE-10754
<https://issues.apache.org/jira/browse/IGNITE-10754>

Please give me some recommendation for right place for expose the API to
don't have misunderstanding in future.

WDYT, do you have additional proposal for such deal?





-- 
Живи с улыбкой! :D

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