PageStorage: Fix entry.tag after full gc && add more debug message (#5094)

[ti-chi-bot]

This is an automated cherry-pick of #5094

What problem does this PR solve?

Issue Number: close #5093, ref #5076

Problem Summary: The entry.tag is incorrect after full gc, this will lead to more IO caused by RegionPersister::doPersist

tiflash/dbms/src/Storages/Transaction/RegionPersister.cpp

Lines 111 to 115 in 5b61ae7

	if (page_reader)
	{
	auto entry = page_reader->getPageEntry(region_id);
	if (entry.isValid() && entry.tag > applied_index)
	return;

What is changed and how it works?

• Copy the old entry and upodate the fields of new entry
• Add some error message when exception is thrown while reading (for No enough data in blob file #5076 )

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]

pending for #5147 merged first

[JaySon-Huang]

/cc @lidezhu

[JaySon-Huang]

/run-all-tests

[JaySon-Huang]

/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
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
DeltaMerge/DeltaMergeStore.cpp              1456               512    64.84%          67                 5    92.54%        2046               467    77.17%         842               390    53.68%
Page/PageUtil.h                              100                16    84.00%           8                 0   100.00%         147                16    89.12%          64                20    68.75%
Page/V2/tests/gtest_page_util.cpp            104                42    59.62%           3                 0   100.00%          54                 4    92.59%          26                12    53.85%
Page/V3/BlobStore.cpp                        571               153    73.20%          57                 2    96.49%        1207               264    78.13%         360               124    65.56%
Page/V3/BlobStore.h                           12                 2    83.33%          10                 2    80.00%          50                23    54.00%           2                 0   100.00%
Page/V3/tests/gtest_blob_store.cpp          5528              1188    78.51%          28                 1    96.43%        1235                66    94.66%        1726               853    50.58%
Page/V3/tests/gtest_page_storage.cpp        4198              1436    65.79%          52                 7    86.54%        1296               154    88.12%        1324               737    44.34%
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                      11969              3349    72.02%         225                17    92.44%        6035               994    83.53%        4344              2136    50.83%

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
18258      9781             46.43%    204905  97984        52.18%

full coverage report (for internal network access only)

[JaySon-Huang]

/merge

[ti-chi-bot]

@JaySon-Huang: 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: c5b66bd

[ti-chi-bot]

@ti-chi-bot: 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
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
DeltaMerge/DeltaMergeStore.cpp              1457               512    64.86%          67                 5    92.54%        2051               467    77.23%         842               391    53.56%
Page/PageUtil.h                              100                16    84.00%           8                 0   100.00%         147                16    89.12%          64                20    68.75%
Page/V2/tests/gtest_page_util.cpp            104                42    59.62%           3                 0   100.00%          54                 4    92.59%          26                12    53.85%
Page/V3/BlobStore.cpp                        571               153    73.20%          57                 2    96.49%        1207               264    78.13%         360               124    65.56%
Page/V3/BlobStore.h                           12                 2    83.33%          10                 2    80.00%          50                23    54.00%           2                 0   100.00%
Page/V3/tests/gtest_blob_store.cpp          5528              1188    78.51%          28                 1    96.43%        1235                66    94.66%        1726               853    50.58%
Page/V3/tests/gtest_page_storage.cpp        4198              1436    65.79%          52                 7    86.54%        1296               154    88.12%        1324               737    44.34%
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                      11970              3349    72.02%         225                17    92.44%        6040               994    83.54%        4344              2137    50.81%

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
18258      9781             46.43%    204910  98001        52.17%

full coverage report (for internal network access only)