pingcap/tidb

Improve observability of fast reorg ADD INDEX progress

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Aperta il 30 ott 2024

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 (6 commenti) (0 reazioni) (1 assegnatario)Go (40.090 star) (6186 fork)batch import
component/ddlgood first issuetype/enhancement

Descrizione

Enhancement

currently we only let progress forward when KV is written to TiKV. When fast reorg is enabled, data will be batched on disk for a long time. No progress will be made during that stage and some users may suspect DDL is stuck.

So I propose we draw another line in metrics, which means "how many record KV we have read to assume the index KV".

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