Exception msg (#4443)

[ti-chi-bot]

This is an automated cherry-pick of #4443

What problem does this PR solve?

Issue Number: close #4422

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

[zanmato1984]

LGTM

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• fzhedu
• zanmato1984

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[fzhedu]

LGTM

[fzhedu]

/merge

[ti-chi-bot]

@fzhedu: 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: 6d5f067

[sre-bot]

Coverage for changed files

Filename                                                                                      Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
/home/jenkins/agent/workspace/tiflash-build-common/tiflash/dbms/src/Flash/Mpp/MPPTask.cpp         417               417     0.00%          21                21     0.00%         350               350     0.00%         190               190     0.00%
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                                                                             417               417     0.00%          21                21     0.00%         350               350     0.00%         190               190     0.00%

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
16980      9545             43.79%    191338  96882        49.37%

full coverage report (for internal network access only)