pingcap / tidb

TiDB - the open-source, cloud-native, distributed SQL database designed for modern applications.
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Cluster suffering write hotspot after creating index #57551

Open tangenta opened 2 days ago

tangenta commented 2 days ago

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

A write workload that has high concentration of writes to a small range of index columns.

2. What did you expect to see? (Required)

No write hotspot.

3. What did you see instead (Required)

One of the TiKV instances is overloaded due to the index write hotspot.

4. What is your TiDB version? (Required)

master