cherrypick #2065 #2094 and #2133 to release-2.0.7

[lichunzhu]

What problem does this PR solve?

cherrypick #2065 #2094 and #2133 to release-2.0.7

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Ehco1996
• glorv

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[lichunzhu]

/run-all-tests

[lichunzhu]

/run-all-tests

https://ci.pingcap.net/blue/organizations/jenkins/dm_ghpr_new_test/detail/dm_ghpr_new_test/2522/pipeline/

[lichunzhu]

/run-all-tests
https://ci.pingcap.net/blue/organizations/jenkins/dm_ghpr_new_test/detail/dm_ghpr_new_test/2561/pipeline

[lichunzhu]

/run-all-tests
https://ci.pingcap.net/blue/organizations/jenkins/dm_ghpr_new_test/detail/dm_ghpr_new_test/2569/pipeline

[lichunzhu]

/run-all-tests
https://ci.pingcap.net/blue/organizations/jenkins/dm_ghpr_new_test/detail/dm_ghpr_new_test/2571/pipeline

[lichunzhu]

/run-all-tests
https://ci.pingcap.net/blue/organizations/jenkins/dm_ghpr_new_test/detail/dm_ghpr_new_test/2571/pipeline

[lichunzhu]

/run-all-tests

[lichunzhu]

/merge

[ti-chi-bot]

@lichunzhu: /merge in this pull request requires 2 approval(s).

In response to this:

/merge

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[lichunzhu]

/merge

[ti-chi-bot]

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

Commit hash: 7a3727a