backend/local: batch split region with batch limit - Githubissues

pingcap / tidb-lightning

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backend/local: batch split region with batch limit #487

Closed glorv closed 3 years ago

glorv commented 3 years ago

What problem does this PR solve?

Limit the batch split key size when batch split regions

close #481

Need https://github.com/pingcap/br/pull/612 to be merged first.

What is changed and how it works?

Run batch split in a loop to limit each request's key size
Add retry for pagnateScanRegion and scatter region
Add some log

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