backup: advacned prepare implementation (#48439) #50520
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Signed-off-by: ti-chi-bot <[email protected]>
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Signed-off-by: hillium <[email protected]>
Signed-off-by: hillium <[email protected]>
Signed-off-by: hillium <[email protected]>
Signed-off-by: hillium <[email protected]>
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## release-6.5 #50520 +/- ##
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… (pingcap#39) close pingcap#50359 Co-authored-by: Ti Chi Robot <[email protected]>
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This is an automated cherry-pick of #48439
What problem does this PR solve?
Issue Number: close #50359
Problem Summary:
This PR implemented the client side of the enhanced prepare stage of snapshot backup.
What is changed and how it works?
Generally this is a state machine that tries to collect the whole range. If a region has applied to the last index, the region's range will be collected. When the whole key space has been collected, we are done.
Check List
Tests
Side effects
Documentation
Release note
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