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new 621e5ac docs: clarify RealtimeMetricsMonitor,
HistoricalMetricsMonitor (#11565)
621e5ac is described below
commit 621e5ac63fec7a38748d1b2fd0258edc987258fd
Author: Charles Smith <[email protected]>
AuthorDate: Tue Oct 5 17:38:23 2021 -0700
docs: clarify RealtimeMetricsMonitor, HistoricalMetricsMonitor (#11565)
* docs: clarify RealtimeMetricsMonitor, HistoricalMetricsMonitor
* Update docs/configuration/index.md
---
docs/configuration/index.md | 3 +--
docs/operations/metrics.md | 5 +++--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/docs/configuration/index.md b/docs/configuration/index.md
index 51161bb..b474574 100644
--- a/docs/configuration/index.md
+++ b/docs/configuration/index.md
@@ -362,12 +362,11 @@ The following monitors are available:
|----|-----------|
|`org.apache.druid.client.cache.CacheMonitor`|Emits metrics (to logs) about
the segment results cache for Historical and Broker processes. Reports typical
cache statistics include hits, misses, rates, and size (bytes and number of
entries), as well as timeouts and and errors.|
|`org.apache.druid.java.util.metrics.SysMonitor`|Reports on various system
activities and statuses using the [SIGAR
library](https://github.com/hyperic/sigar). Requires execute privileges on
files in `java.io.tmpdir`. Do not set `java.io.tmpdir` to `noexec` when using
`SysMonitor`.|
-|`org.apache.druid.server.metrics.HistoricalMetricsMonitor`|Reports statistics
on Historical processes.|
+|`org.apache.druid.server.metrics.HistoricalMetricsMonitor`|Reports statistics
on Historical processes. Available only on Historical processes.|
|`org.apache.druid.java.util.metrics.JvmMonitor`|Reports various JVM-related
statistics.|
|`org.apache.druid.java.util.metrics.JvmCpuMonitor`|Reports statistics of CPU
consumption by the JVM.|
|`org.apache.druid.java.util.metrics.CpuAcctDeltaMonitor`|Reports consumed CPU
as per the cpuacct cgroup.|
|`org.apache.druid.java.util.metrics.JvmThreadsMonitor`|Reports Thread
statistics in the JVM, like numbers of total, daemon, started, died threads.|
-|`org.apache.druid.segment.realtime.RealtimeMetricsMonitor`|Reports statistics
on Realtime processes.|
|`org.apache.druid.server.metrics.EventReceiverFirehoseMonitor`|Reports how
many events have been queued in the EventReceiverFirehose.|
|`org.apache.druid.server.metrics.QueryCountStatsMonitor`|Reports how many
queries have been successful/failed/interrupted.|
|`org.apache.druid.server.emitter.HttpEmittingMonitor`|Reports internal
metrics of `http` or `parametrized` emitter (see below). Must not be used with
another emitter type. See the description of the metrics here:
https://github.com/apache/druid/pull/4973.|
diff --git a/docs/operations/metrics.md b/docs/operations/metrics.md
index cec0af0..2d863d4 100644
--- a/docs/operations/metrics.md
+++ b/docs/operations/metrics.md
@@ -159,9 +159,10 @@ These metrics are applicable for the Kinesis Indexing
Service.
|`ingest/kinesis/maxLag/time`|Max lag time in milliseconds between the current
message sequence number consumed by the Kinesis indexing tasks and latest
sequence number in Kinesis across all shards. Minimum emission period for this
metric is a minute.|dataSource.|Greater than 0, up to max Kinesis retention
period in milliseconds |
|`ingest/kinesis/avgLag/time`|Average lag time in milliseconds between the
current message sequence number consumed by the Kinesis indexing tasks and
latest sequence number in Kinesis across all shards. Minimum emission period
for this metric is a minute.|dataSource.|Greater than 0, up to max Kinesis
retention period in milliseconds |
-## Ingestion metrics (Realtime process)
+## Ingestion metrics
-These metrics are only available if the RealtimeMetricsMonitor is included in
the monitors list for the Realtime process. These metrics are deltas for each
emission period.
+Streaming ingestion tasks and certain types of
+batch ingestion emit the following metrics. These metrics are deltas for each
emission period.
|Metric|Description|Dimensions|Normal Value|
|------|-----------|----------|------------|
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