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Published 20 hours ago • verified publisher icon pingcap

dumpling should handle cases that estimated count are not accurate

Open lichunzhu opened this issue 5 years ago • 0 comments

Now dumpling computes estimatedChunks through tidb estRows.

	// every chunk would have eventual adjustments
	estimatedChunks := count / conf.Rows
	estimatedStep := (max-min)/estimatedChunks + 1

When table is not created but not used in tidb, estRows will be 10000. Then estimatedChunks will be very large if conf.Rows is not big. Dumpling may dump many sql files which is not expected.

lichunzhu avatar Jun 15 '20 13:06 lichunzhu