Commit Graph

29 Commits

Author SHA1 Message Date
Hui Wang
bf3d9ba57b
stream aggregation: fix possible duplicated aggregation results ()
When ingesting samples with the same labels(duplicated samples or
samples with the same labels after `by` or `without` options). They
could register different entries for the same labelset in
LabelsCompressor.
For example, both index 99 and 100 can be assigned to label `foo=1` in
two concurrent pushes. Then due to differing label indexes in encoded
keys, the samples will appear as distinct in aggrState, resulting in
duplicated results after decompressing the label indexes.

fbde238cdc/lib/streamaggr/streamaggr.go (L933)

In this pull request, since we need to store `idxToLabel` first to
ensure the idx can be searched after `lc.labelToIdxStore`,
the `lc.idxToLabel` still could contain a duplicated entries
[100]="foo=1". But given the low likelihood of this issue and the size
of idxToLabel, it should be fine.
2024-09-30 14:30:34 +02:00
Aliaksandr Valialkin
4d27933041
app/vlinsert: support _time field without timezone information during data ingestion
Use local timezone of the host server in this case. The timezone can be overridden
with TZ environment variable if needed.

While at it, allow using whitespace instead of T as a delimiter between data and time
in the ingested _time field. For example, '2024-09-20 10:20:30' is now accepted
during data ingestion. This is valid ISO8601 format, which is used by some log shippers,
so it should be supported. This format is also known as SQL datetime format.

Also assume local time zone when time without timezone information is passed to querying APIs.
Previously such a time was parsed in UTC timezone. Add `Z` to the end of the time string
if the old behaviour is preferred.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6721
2024-09-26 12:50:14 +02:00
Aliaksandr Valialkin
d6415b2572
all: consistently use 'any' instead of 'interface{}'
'any' type is supported starting from Go1.18. Let's consistently use it
instead of 'interface{}' type across the code base, since `any` is easier to read than 'interface{}'.
2024-07-10 00:23:26 +02:00
Aliaksandr Valialkin
b7b3a9e9a3
lib/logstorage: work-in-progress 2024-06-04 01:50:55 +02:00
Aliaksandr Valialkin
32193b6059
lib/encoding: optimize UnmarshalVarUint64, UnmarshalVarInt64 and UnmarshalBytes a bit
Change the return values for these functions - now they return the unmarshaled result plus
the size of the unmarshaled result in bytes, so the caller could re-slice the src for further unmarshaling.

This improves performance of these functions in hot loops of VictoriaLogs a bit.
2024-05-14 01:30:25 +02:00
Aliaksandr Valialkin
b933001d2d
all: replace old https://docs.victoriametrics.com/Single-server-VictoriaMetrics.html url with the new one - https://docs.victoriametrics.com/single-server-victoriametrics/ 2024-04-18 03:11:49 +02:00
Aliaksandr Valialkin
27b9e8ed3e
app/{vmagent,vminsert}: add -streamAggr.dropInputSamples command-line flag for dropping the specified labels from input samples before deduplication and streaming aggregation 2024-03-05 02:27:27 +02:00
Aliaksandr Valialkin
b958135677
lib/promutils: optimize LabelsCompressor.Decompress by using a specialized labelsMap struct instead of sync.Map
The labelsMap struct employs the fact that label indexes are condensed around 0,
so it stores the referred labels in a slice instead of map and uses slice index as label key.
This allows increasing the LabelsCompressor.Decompress performance by up to 3x.
This also reduces the latency of data flush in stream aggregation.
2024-03-03 23:25:27 +02:00
Aliaksandr Valialkin
0d5d46f9db
lib/streamaggr: huge pile of changes
- Reduce memory usage by up to 5x when de-duplicating samples across big number of time series.
- Reduce memory usage by up to 5x when aggregating across big number of output time series.
- Add lib/promutils.LabelsCompressor, which is going to be used by other VictoriaMetrics components
  for reducing memory usage for marshaled []prompbmarshal.Label.
- Add `dedup_interval` option at aggregation config, which allows setting individual
  deduplication intervals per each aggregation.
- Add `keep_metric_names` option at aggregation config, which allows keeping the original
  metric names in the output samples.
- Add `unique_samples` output, which counts the number of unique sample values.
- Add `increase_prometheus` and `total_prometheus` outputs, which ignore the first sample
  per each newly encountered time series.
- Use 64-bit hashes instead of marshaled labels as map keys when calculating `count_series` output.
  This makes obsolete https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5579
- Expose various metrics, which may help debugging stream aggregation:
  - vm_streamaggr_dedup_state_size_bytes - the size of data structures responsible for deduplication
  - vm_streamaggr_dedup_state_items_count - the number of items in the deduplication data structures
  - vm_streamaggr_labels_compressor_size_bytes - the size of labels compressor data structures
  - vm_streamaggr_labels_compressor_items_count - the number of entries in the labels compressor
  - vm_streamaggr_flush_duration_seconds - a histogram, which shows the duration of stream aggregation flushes
  - vm_streamaggr_dedup_flush_duration_seconds - a histogram, which shows the duration of deduplication flushes
  - vm_streamaggr_flush_timeouts_total - counter for timed out stream aggregation flushes,
    which took longer than the configured interval
  - vm_streamaggr_dedup_flush_timeouts_total - counter for timed out deduplication flushes,
    which took longer than the configured dedup_interval
- Actualize docs/stream-aggregation.md

The memory usage reduction increases CPU usage during stream aggregation by up to 30%.

This commit is based on https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5850
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5898
2024-03-02 03:15:43 +02:00
Aliaksandr Valialkin
21170e558c
lib/promutils: hide the math.Round() logic inside ParseTimeMsec() function
This should prevent from bugs similar to https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5801 in the future

This is a follow-up for ce3ec3ff2e
2024-02-23 01:21:42 +02:00
Aliaksandr Valialkin
e15f07d989
all: consistently clear prompbmarshal.Label by assigning an empty struct instead of zeroing Name and Value individually 2024-01-22 01:11:59 +02:00
Aliaksandr Valialkin
92e79e835e
lib/promutils, app/vmalert-tool/unittest: move promutils.Duration.ParseTime() to app/vmalert-tool/unittest.durationToTime()
The ParseTime() function looks strange, since it converts relative duration to absolute time since Unix Epoch.
In most scenarios such a conversion is used by mistake.

It is better to do not expose such a function for public use and hide it inside the package where it is needed,
e.g. inside app/vmalert-tool/unittest.

This is a follow-up for dc28196237
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2945
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4789
2023-10-16 14:23:41 +02:00
Haleygo
130e0ea5f0
vmalert-tool: implement unittest ()
1. split package rule under /app/vmalert, expose needed objects
2. add vmalert-tool with unittest subcmd

https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2945
2023-10-16 14:12:06 +02:00
Roman Khavronenko
303d3616ec
vmalert: revert unittest feature ()
* Revert "vmalert: unittest support stale datapoint ()"

This reverts commit 0b44df7ec8.

* Revert "docs: specify min version and limitations for vmalert's unit tests"

This reverts commit a24541bd

Signed-off-by: hagen1778 <roman@victoriametrics.com>

* Revert "vmalert: init unit test ()"

This reverts commit da60a68d

Signed-off-by: hagen1778 <roman@victoriametrics.com>

* docs: mention unittest revert in changelog

Signed-off-by: hagen1778 <roman@victoriametrics.com>

---------

Signed-off-by: hagen1778 <roman@victoriametrics.com>

(cherry picked from commit 9f1b9b86cc)
Signed-off-by: hagen1778 <roman@victoriametrics.com>
2023-07-28 11:09:52 +02:00
Haleygo
939c8b8372
vmalert: init unit test ()
vmalert: support unit tests

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2945
---------

Signed-off-by: hagen1778 <roman@victoriametrics.com>
Co-authored-by: hagen1778 <roman@victoriametrics.com>
2023-07-20 21:19:45 -07:00
Haleygo
b029286298
fix parse for invalid partial RFC3339 format ()
The validation was needed for covering corner cases when storage is tested with data from 1970.
This resulted into unexpected search results, as year was parsed incorrectly from the given timestamp.


Co-authored-by: hagen1778 <roman@victoriametrics.com>
2023-07-06 22:09:35 -07:00
Aliaksandr Valialkin
46210c4d5e
lib/promutils.ParseTime(): add support for timestamps in milliseconds
See https://stackoverflow.com/questions/76437098/how-to-handle-time-unit-and-step-while-ingesting-or-querying-in-victoriametrics/76438405

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4459
2023-07-06 17:11:54 -07:00
Aliaksandr Valialkin
9461d3fdfa
lib/promutils: add ParseTimeAt() function 2023-05-13 20:12:55 -07:00
Aliaksandr Valialkin
3b1e40d73f
lib/promutils: properly return error when incorrect Prometheus label names are passed to NewLabelsFromString()
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4284
See also https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4304
2023-05-12 17:02:06 -07:00
Aliaksandr Valialkin
d21a244641
lib/promutils: properly parse time strings with timezones at ParseTime() 2023-05-11 13:36:00 -07:00
Aliaksandr Valialkin
5dbaffe2c6
app/{vmselect,vmctl}: move ParseTime() to lib/promutils
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4091

This is a follow-up for e2053baf32
2023-05-09 22:42:35 -07:00
Dmytro Kozlov
8ec5e7f53a
app/vmctl: add multiple filters defined in --vm-native-filter-match flag to discovered metric names ()
* app/vmctl: add multiple filters defined in `--vm-native-filter-match` flag to discovered metric names

* app/vmctl: fix comments

* app/vmctl: move function buildMatchWithFilter to the correct place

* app/vmctl: update CHANGELOG.md

* app/vmctl: fix CI, remove error wrapping

* app/vmctl: fix CI, simplify `Set()`
2023-04-06 15:11:53 -07:00
Aliaksandr Valialkin
02ceebccc0
lib/promscrape: do not re-use previously loaded scrape targets on failed attempt to load updated scrape targets at file_sd_configs
The logic employed for re-using the previously loaded scrape target was broken initially.
The commit cc0427897c tried to fix it, but the new logic
became too complex and fragile. So it is better to just remove this logic,
since the targets from temporarily broken file should be eventually loaded on next
attempts every -promscrape.fileSDCheckInterval

This also allows removing fragile hacks around __vm_filepath label.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3989
2023-04-02 21:11:12 -07:00
Oleksandr Redko
0e1c395609
app,lib: fix typos in comments () 2023-02-13 09:32:35 -08:00
Aliaksandr Valialkin
97b41e727c
lib/promscrape: implement target-level and metric-level relabel debugging
Target-level debugging is performed by clicking the 'debug' link at the corresponding target
on either http://vmagent:8429/targets page or on http://vmagent:8428/service-discovery page.

Metric-level debugging is perfromed at http://vmagent:8429/metric-relabel-debug page.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3407

See https://docs.victoriametrics.com/vmagent.html#relabel-debug
2022-12-10 02:25:56 -08:00
Aliaksandr Valialkin
be6da5053f
lib/promscrape: optimize service discovery speed
- Return meta-labels for the discovered targets via promutils.Labels
  instead of map[string]string. This improves the speed of generating
  meta-labels for discovered targets by up to 5x.

- Remove memory allocations in hot paths during ScrapeWork generation.
  The ScrapeWork contains scrape settings for a single discovered target.
  This improves the service discovery speed by up to 2x.
2022-11-29 21:26:23 -08:00
Aliaksandr Valialkin
810dd74fb9
lib/promscrape: properly implement ScrapeConfig.clone()
Previously ScrapeConfig.clone() was improperly copying promauth.Secret fields -
their contents was replaced with `<secret>` value.

This led to inability to use passwords and secrets in `-promscrape.config` file.
The bug has been introduced in v1.77.0 in the commit 67b10896d2

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2551
2022-05-07 00:06:19 +03:00
Aliaksandr Valialkin
c50e48a74c
lib/promscrape: follow-up after baa1c24b36 2022-04-16 14:26:38 +03:00
Roman Khavronenko
791cad8c2e
lib/promscrape: support prometheus-like duration in scrape configs ()
* lib/promscrape: support prometheus-like duration in scrape configs

The change allows to specify duration values like `1d`, `1w`
for fields `scrape_interval`, `scrape_timeout`, etc.

https://github.com/VictoriaMetrics/VictoriaMetrics/issues/817#issuecomment-1033384766
Signed-off-by: hagen1778 <roman@victoriametrics.com>

* lib/blockcache: make linter happy

Signed-off-by: hagen1778 <roman@victoriametrics.com>

* lib/promscrape: support prometheus-like duration in scrape configs

* add support for extra fields `scrape_align_interval` and `scrape_offset`;
* support Prometheus duration parsing for `__scrape_interval__`
and `__scrape_duration__` labels;

Signed-off-by: hagen1778 <roman@victoriametrics.com>

* wip

* wip

* docs/CHANGELOG.md: document the feature

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
2022-02-11 16:17:51 +02:00