fix bug in MinTSOScheduler that estimated_thread_usage/waiting_tasks_count/active_tasks_count are not 0 even if there is no queries running (#5557)

[ti-chi-bot]

This is an automated cherry-pick of #5557

Signed-off-by: xufei [email protected]

What problem does this PR solve?

Issue Number: close #5556

Problem Summary:

What is changed and how it works?

Fix some bugs that active tasks count/ estimated thread usage may be repeat added, and type_waiting_tasks_count may lost update when schedule meet error.

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:

• bestwoody
• yibin87

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[yibin87]

LGTM

[windtalker]

/merge

[ti-chi-bot]

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[ti-chi-bot]

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

Commit hash: 85b0f88

[sre-bot]

Coverage for changed files

Filename                      Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
MPPTask.cpp                       448               448     0.00%          27                27     0.00%         434               434     0.00%         210               210     0.00%
MPPTask.h                           3                 3     0.00%           3                 3     0.00%           3                 3     0.00%           0                 0         -
MinTSOScheduler.cpp               326               293    10.12%           7                 6    14.29%         200               178    11.00%         166               161     3.01%
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                             777               744     4.25%          37                36     2.70%         637               615     3.45%         376               371     1.33%

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
18784      9448             49.70%    214115  95481        55.41%

full coverage report (for internal network access only)