pingcap/tidb
Vedi su GitHubAdd SQL diagnosis rule: threshold check for tikv_append_log_duration
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#17.941 aperta il 11 giu 2020
good first issuehelp wantedtype/enhancement
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Descrizione
Development Task
When Raft append log duration, P99 Value > 500ms, then append an warning in INSPECTION_RESULT table, this may be caused by:
- write disk too slow, check the disk latency.
- It may trigger the RocksDB Write Stall.
Refer
- You can query the
tikv_append_log_durationtable to getmetrics_schema.tikv_append_log_durationvalue. Here is the related doc. - You can refer the
thresholdCheckInspectionimplementation in TiDB.
If you have any questions or want to discuss something, you can chat in the sig-dashboard slack channel and @ chenshuang.