* lib/streamaggr: discard samples with timestamps not matching aggregation interval
Samples with timestamps lower than `now - aggregation_interval` are likely to be written via backfilling and should not be used for calculation of aggregation.
See #4068
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* lib/streamaggr: make log message more descriptive, fix imports
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
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Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
- Make sure that the last successfully loaded config is used on hot-reload failure
- Properly cleanup resources occupied by already initialized aggregators
when the current aggregator fails to be initialized
- Expose distinct vmagent_streamaggr_config_reload* metrics per each -remoteWrite.streamAggr.config
This should simplify monitoring and debugging failed reloads
- Remove race condition at app/vminsert/common.MustStopStreamAggr when calling sa.MustStop() while sa
could be in use at realoadSaConfig()
- Remove lib/streamaggr.aggregator.hasState global variable, since it may negatively impact scalability
on system with big number of CPU cores at hasState.Store(true) call inside aggregator.Push().
- Remove fine-grained aggregator reload - reload all the aggregators on config change instead.
This simplifies the code a bit. The fine-grained aggregator reload may be returned back
if there will be demand from real users for it.
- Check -relabelConfig and -streamAggr.config files when single-node VictoriaMetrics runs with -dryRun flag
- Return back accidentally removed changelog for v1.87.4 at docs/CHANGELOG.md
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3639
