docs/CHANGELOG.md: document 9d45b46f4c

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Aliaksandr Valialkin 2021-07-27 12:38:31 +03:00
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* FEATURE: add `-search.maxSamplesPerSeries` command-line flag for limiting the number of raw samples a single query could process per each time series. This option can prevent from out of memory errors when a query processes tens of millions of raw samples per series. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1067).
* BUGFIX: vmbackup: automatically set default `us-east1` S3 region if it is missing. This should simplify using S3-compatible services such as MinIO for backups. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1449).
* BUGFIX: vmselect: prevent from possible deadlock when multiple `target` query args are passed to [Graphite Render API](https://docs.victoriametrics.com/#graphite-render-api-usage).
* BUGFIX: return series with `a op b` labels and `N` values for `(a op b) default N` if `(a op b)` returns series with all NaN values. Previously such series were removed.