Add a fail point that can hold PS snapshot for five minute.

[jiaqizho]

What problem does this PR solve?

Issue Number: ref #3594

Problem Summary:

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

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• JaySon-Huang
• lidezhu

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[JaySon-Huang]

lgtm

[jiaqizho]

@lidezhu PTAL

[lidezhu]

LGTM

[jiaqizho]

/merge

[ti-chi-bot]

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

/run-all-tests

You only need to trigger /merge once, and if the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

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[ti-chi-bot]

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

Commit hash: 39e8ecc

[ti-chi-bot]

@jiaqizho: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[sre-bot]

Coverage for changed files

Filename                                    Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Common/FailPoint.cpp                            422                92    78.20%           6                 0   100.00%          56                 8    85.71%         140                59    57.86%
Storages/DeltaMerge/DeltaMergeStore.cpp        1352               474    64.94%          64                 5    92.19%        1954               449    77.02%         792               376    52.53%
Storages/Page/V3/BlobStore.cpp                  438               136    68.95%          49                 5    89.80%         953               241    74.71%         274               106    61.31%
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                          2212               702    68.26%         119                10    91.60%        2963               698    76.44%        1206               541    55.14%

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
17025      9512             44.13%    191980  96449        49.76%

full coverage report (for internal network access only)