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resource_control: add repeats to tidb_runaway_queries #18611

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merged 4 commits into from
Oct 16, 2024
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resource_control: add repeats to tidb_runaway_queries #18611

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99d65ce
add repeats
HuSharp Sep 11, 2024
ca7eab1
Update content organization format
lilin90 Sep 14, 2024
f60c099
Update tidb-resource-control.md
HuSharp Sep 14, 2024
6f55f2d
Merge remote-tracking branch 'upstream/master' into pr/18611
lilin90 Oct 16, 2024
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24 changes: 14 additions & 10 deletions tidb-resource-control.md
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Original file line number Diff line number Diff line change
Expand Up @@ -347,19 +347,23 @@ Runaway Query 是指执行时间或消耗资源超出预期的查询（仅指 `S
MySQL [(none)]> SELECT * FROM mysql.tidb_runaway_queries LIMIT 1\G
*************************** 1. row ***************************
resource_group_name: default
time: 2024-09-06 17:43:09
match_type: identify
action: kill
original_sql: select * from sbtest.sbtest1
plan_digest: cef718bcf4137307a8167e595941a92a260deb7dd9e1c9735bfba3ce3542de0f
tidb_server: 127.0.0.1:4000
rule: RequestUnit = RRU:10.838106, WRU:0.000000, WaitDuration:0s(10)
start_time: 2024-09-09 17:43:42
repeats: 2
match_type: watch
action: kill
sample_sql: select sleep(2) from t
sql_digest: 4adbc838b86c573265d4b39a3979d0a362b5f0336c91c26930c83ab187701a55
plan_digest: 5d094f78efbce44b2923733b74e1d09233cb446318293492901c5e5d92e27dbc
tidb_server: 127.0.0.1:4000
```

其中，`match_type` 为该 Runaway Query 的来源，其值如下：
字段解释：

- `identify` 表示命中条件。
- `watch` 表示被快速识别机制命中。
- `start_time` 为该 Runaway Query 被识别的时间。
- `repeats` 为该 Runaway Query 从 `start_time` 开始后被识别的次数。
- `match_type` 为该 Runaway Query 的来源，其值如下：
- `identify` 表示命中条件。
- `watch` 表示被快速识别机制命中。

+ `information_schema.runaway_watches` 表中包含了 Runaway Queries 的快速识别规则记录。详见 [`RUNAWAY_WATCHES`](/information-schema/information-schema-runaway-watches.md)。

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