add mpp query count metrics

[windtalker]

Signed-off-by: xufei xufeixw@mail.ustc.edu.cn

What problem does this PR solve?

Issue Number: ref #5095

Problem Summary:

What is changed and how it works?

Add mpp query count metrics

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• SeaRise
• ywqzzy

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[SeaRise]

LGTM

[ywqzzy]

LGTM

[windtalker]

/merge

[ti-chi-bot]

@windtalker: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: d2a510e

[SeaRise]

or

if (it != mpp_query_map.end())
{
    mpp_query_map.erase(it);
    GET_METRIC(tiflash_mpp_task_manager, type_mpp_query_count).Set(mpp_query_map.size());
}         

?

[windtalker]

It's ok since it will be removed in the next pr.

[windtalker]

/run-unit-test

[windtalker]

/run-unit-test

[yibin87]

LGTM

[windtalker]

/run-unit-test

[sre-bot]

Coverage for changed files

Filename                         Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Common/TiFlashMetrics.h               18                 0   100.00%          11                 0   100.00%          47                 1    97.87%           8                 0   100.00%
Flash/Mpp/MPPTaskManager.cpp         146                 7    95.21%          16                 1    93.75%         215                20    90.70%          62                17    72.58%
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                164                 7    95.73%          27                 1    96.30%         262                21    91.98%          70                17    75.71%

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
18862      8115             56.98%    219548  83608        61.92%

full coverage report (for internal network access only)