mounter(ticdc): fix mounter default value panic and data inconsistency (#3930)#4444

Closed

ti-chi-bot wants to merge 1 commit intopingcap:release-5.1from ti-chi-bot:cherry-pick-3930-to-release-5.1

+572-4

Commits on Jan 24, 2022

This is an automated cherry-pick of pingcap#3930

maxshuang
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ti-chi-bot
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