[GitHub] [druid] xvrl commented on a change in pull request #11417: Adding a new metric ingest/notices/queueSize to give more visibility into supervisor notices queue size.

[GitBox <gi...@apache.org>]

xvrl commented on a change in pull request #11417:
URL: https://github.com/apache/druid/pull/11417#discussion_r667131005



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File path: docs/operations/metrics.md
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@@ -180,6 +180,7 @@ These metrics are only available if the RealtimeMetricsMonitor is included in th
 |`ingest/handoff/count`|Number of handoffs that happened.|dataSource, taskId, taskType.|Varies. Generally greater than 0 once every segment granular period if cluster operating normally|
 |`ingest/sink/count`|Number of sinks not handoffed.|dataSource, taskId, taskType.|1~3|
 |`ingest/events/messageGap`|Time gap between the data time in event and current system time.|dataSource, taskId, taskType.|Greater than 0, depends on the time carried in event |
+|`ingest/notices/queueSize`|Number of pending notices to be processed by the coordinator|dataSource.|Greater than or equal to 0, should not be a very high number |

Review comment:
       I would expect a typical value to be 0 and occasionally in the low single-digits, anything greater than 0 indicates that there is some waiting time.




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