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tidb-lightning: unify idle-worker wording with the Grafana panel table #23881

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tidb-lightning: unify idle-worker wording with the Grafana panel table #23881

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8 changes: 4 additions & 4 deletions tidb-lightning/monitor-tidb-lightning.md
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Expand Up @@ -140,10 +140,10 @@ Metrics provided by `tidb-lightning` are listed under the namespace `lightning_*
Counts idle workers. Labels:

- **name**:
* `table`: the remainder of `table-concurrency`, normally 0 until the end of the process
* `index`: the remainder of `index-concurrency`, normally 0 until the end of the process
* `region`: the remainder of `region-concurrency`, normally 0 until the end of the process
* `io`: the remainder of `io-concurrency`, normally close to configured value (default 5), and close to 0 means the disk is too slow
* `table`: Number of unused `table-concurrency`, normally 0 until the end of process
* `index`: Number of unused `index-concurrency`, normally 0 until the end of process
* `region`: Number of unused `region-concurrency`, normally 0 until the end of process
* `io`: Number of unused `io-concurrency`, normally close to configured value (default 5), and close to 0 means the disk is too slow
* `closed-engine`: number of engines which have been closed but not yet cleaned up, normally close to index + table-concurrency (default 8). A value close to 0 means TiDB Lightning is faster than TiKV Importer, which might cause TiDB Lightning to stall

- **`lightning_kv_encoder`** (Counter)
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