Bugfix of memtracker released early

[bestwoody]

What problem does this PR solve?

Issue Number: close #5609

Problem Summary:
Bugfix: memtracker released early, since ProcEntryList sometimes is released before ExchangeReceiver destruction.

What is changed and how it works?

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

[CalvinNeo]

lgtm

[yibin87]

LGTM

[yibin87]

/merge

[ti-chi-bot]

@yibin87: 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: dafb222

[sre-bot]

Coverage for changed files

Filename                           Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Common/MemoryTracker.h                  14                 6    57.14%          14                 6    57.14%          17                 9    47.06%           0                 0         -
Flash/Mpp/ExchangeReceiver.cpp         457               278    39.17%          35                23    34.29%         624               355    43.11%         228               162    28.95%
Flash/Mpp/ExchangeReceiver.h            14                 2    85.71%          12                 2    83.33%          26                 6    76.92%           2                 0   100.00%
Interpreters/ProcessList.h              24                10    58.33%          18                 7    61.11%          69                27    60.87%           6                 3    50.00%
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                  509               296    41.85%          79                38    51.90%         736               397    46.06%         236               165    30.08%

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
18627      8332             55.27%    215405  85898        60.12%

full coverage report (for internal network access only)