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docs/Cluster-VictoriaMetrics.md: mention that sometimes -replicationFactor shouldnt be set at vmselect nodes

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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1207
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Aliaksandr Valialkin 2021-04-14 13:06:46 +03:00
parent 4a54c212d6
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README.md
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@ -354,7 +354,7 @@ so up to 2 `vmstorage` nodes can be lost without data loss. The minimum number o
the remaining 3 `vmstorage` nodes could provide the `-replicationFactor=3` for newly ingested data.
When the replication is enabled, `-replicationFactor=N` and `-dedup.minScrapeInterval=1ms` command-line flag must be passed to `vmselect` nodes.
The `-replicationFactor=N` improves query performance when a part of vmstorage nodes respond slowly and/or temporarily unavailable.
The `-replicationFactor=N` improves query performance when a part of vmstorage nodes respond slowly and/or temporarily unavailable. Sometimes `-replicationFactor` at `vmselect` nodes shouldn't be set. See [this issues](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1207) for details.
The `-dedup.minScrapeInterval=1ms` de-duplicates replicated data during queries. It is OK if `-dedup.minScrapeInterval` exceeds 1ms
when [deduplication](https://victoriametrics.github.io/Single-server-VictoriaMetrics.html#deduplication) is used additionally to replication.

2
docs/Cluster-VictoriaMetrics.md
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@ -358,7 +358,7 @@ so up to 2 `vmstorage` nodes can be lost without data loss. The minimum number o
the remaining 3 `vmstorage` nodes could provide the `-replicationFactor=3` for newly ingested data.
When the replication is enabled, `-replicationFactor=N` and `-dedup.minScrapeInterval=1ms` command-line flag must be passed to `vmselect` nodes.
The `-replicationFactor=N` improves query performance when a part of vmstorage nodes respond slowly and/or temporarily unavailable.
The `-replicationFactor=N` improves query performance when a part of vmstorage nodes respond slowly and/or temporarily unavailable. Sometimes `-replicationFactor` at `vmselect` nodes shouldn't be set. See [this issues](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1207) for details.
The `-dedup.minScrapeInterval=1ms` de-duplicates replicated data during queries. It is OK if `-dedup.minScrapeInterval` exceeds 1ms
when [deduplication](https://victoriametrics.github.io/Single-server-VictoriaMetrics.html#deduplication) is used additionally to replication.