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docs/CHANGELOG.md: document 9cdd4696fe

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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1252
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Aliaksandr Valialkin 2021-05-05 20:28:46 +03:00
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# CHANGELOG
* FEATURE: vmalert: add flag to control behaviour on startup for state restore errors. Alerting rules now can return specific error type ErrStateRestore to indicate whether restore state procedure failed. Such errors were returned and logged before as well. But now user can specify whether to just log these errors (`-remoteRead.ignoreRestoreErrors=true`) or to stop the process (`-remoteRead.ignoreRestoreErrors=false`). The latter is important when VM isn't ready yet to serve queries from vmalert and it needs to wait. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1252).
* BUGFIX: properly remove stale parts outside the configured retention if `-retentionPeriod` is smaller than one month. Previously stale parts could remain active for up to a month after they go outside the retention.
* BUGFIX: stop the process on panic errors, since such errors may leave the process in inconsistent state. Previously panics could be recovered, which could result in unexpected hard-to-debug further behavior of running process.