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app/vmselect/netstorage: fix potential panic under high load

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The panic may trigger during data blocks' processing received
from vmstorage nodes when some of vmstorage nodes return an error
or when `-replicationFactor` is set to values higher than 2 at `vmselect`.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3058
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Aliaksandr Valialkin 2022-09-02 21:34:00 +03:00
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@ -17,8 +17,13 @@ The following tip changes can be tested by building VictoriaMetrics components f
* FEATURE: [MetricsQL](https://docs.victoriametrics.com/MetricsQL.html): evaluate `q1`, ..., `qN` in parallel when calculating `union(q1, .., qN)`. Previously [union](https://docs.victoriametrics.com/MetricsQL.html#union) args were evaluated sequentially. This could result in lower than expected performance.
* BUGFIX: [VictoriaMetrics cluster](https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html): fix potential panic at `vmselect` under high load, which has been introduced in [v1.81.0](https://docs.victoriametrics.com/CHANGELOG.html#v1810). See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3058).
## [v1.81.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.81.0)
**It isn't recommended to update cluster version of VictoriaMetrics to v1.81.0 because of [the bug](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3058), which may result in `vmselect` crashes under high load**
Released at 31-08-2022
**Update note 1:** [vmalert](https://docs.victoriametrics.com/vmalert.html) by default hides values of `-remoteWrite.url`, `-remoteRead.url` and `-datasource.url` in logs and at `http://vmalert:8880/flags` for security reasons. See the corresponding SECURITY change in the Chagelog below for additional info.