Previously all the incoming samples were de-duplicated, even if their series doesn't
match aggregation rule filters. This could result in increased CPU usage.
Now the de-duplication isn't applied to samples for series, which do not match
aggregation rule filters. Such samples are just ignored.
* lib/storage: pre-create timeseries before indexDB rotation
during an hour before indexDB rotation start creating records at the next indexDB
it must improve performance during switch for the next indexDB and remove ingestion issues.
Since there is no need for creation new index records for timeseries already ingested into current indexDB
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4563
* lib/storage: further work on indexdb rotation optimization
- Document the change at docs/CHAGNELOG.md
- Move back various caches from indexDB to Storage. This makes the change less intrusive.
The dateMetricIDCache now takes into account indexDB generation, so it stores (date, metricID)
entries for both the current and the next indexDB.
- Consolidate the code responsible for idbNext pre-filling into prefillNextIndexDB() function.
This improves code readability and maintainability a bit.
- Rewrite and simplify the code responsible for calculating the next retention timestamp.
Add various tests for corner cases of this code.
- Remove indexdb pre-filling from RegisterMetricNames() function, since this function is rarely called.
It is OK to add indexdb entries on demand in this function. This simplifies the code.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1401
* docs/CHANGELOG.md: refer to https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4563
---------
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
- Round staleness_interval durations to the upper number of seconds.
This should prevent from under-calculations for fractional staleness intervals.
- Rename stalenessInterval field at *AggrState structs into stalenessSecs, since it holds seconds.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4667
- Improve docs
- Hide `debug relabeling` column when -promscrape.dropOriginalLabels command-line flag is set
- Inline the code from the added template functions, since the code is harder to follow
with the template functions, especially when these functions have misleading names.
Also, these functions are used only in one place, e.g. they do not reduce the amounts of code.
- Hide `click to show original labels` title at `labels` column when original labels aren't available.
- Show the reason on whey original labels aren't available at /service-discovery page.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4597
- Parse protobuf if Content-Type isn't set to `application/json` - this behavior is documented at https://grafana.com/docs/loki/latest/api/#push-log-entries-to-loki
- Properly handle gzip'ped JSON requests. The `gzip` header must be read from `Content-Encoding` instead of `Content-Type` header
- Properly flush all the parsed logs with the explicit call to vlstorage.MustAddRows() at the end of query handler
- Check JSON field types more strictly.
- Allow parsing Loki timestamp as floating-point number. Such a timestamp can be generated by some clients,
which store timestamps in float64 instead of int64.
- Optimize parsing of Loki labels in Prometheus text exposition format.
- Simplify tests.
- Remove lib/slicesutil, since there are no more users for it.
- Update docs with missing info and fix various typos. For example, it should be enough to have `instance` and `job` labels
as stream fields in most Loki setups.
- Allow empty of missing timestamps in the ingested logs.
The current timestamp at VictoriaLogs side is then used for the ingested logs.
This simplifies debugging and testing of the provided HTTP-based data ingestion APIs.
The remaining MAJOR issue, which needs to be addressed: victoria-logs binary size increased from 13MB to 22MB
after adding support for Loki data ingestion protocol at https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4482 .
This is because of shitty protobuf dependencies. They must be replaced with another protobuf implementation
similar to the one used at lib/prompb or lib/prompbmarshal .
* app/vmagent: fix creating target id if `--promscrape.dropOriginalLabels` flag was used
* app/vmagent: hide links if OriginalLabels was dropped
* app/vmagent: update CHANGELOG.md and added information to the docs
* app/vmagent: fix comments
* app/vlinsert: add support of loki push protocol
- implemented loki push protocol for both Protobuf and JSON formats
- added examples in documentation
- added example docker-compose
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* app/vlinsert: move protobuf metric into its own file
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* deployment/docker/victorialogs/promtail: update reference to docker image
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* deployment/docker/victorialogs/promtail: make volume name unique
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* app/vlinsert/loki: add license reference
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* deployment/docker/victorialogs/promtail: fix volume name
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* docs/VictoriaLogs/data-ingestion: add stream fields for loki JSON ingestion example
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* app/vlinsert/loki: move entities to places where those are used
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* app/vlinsert/loki: refactor to use common components
- use CommonParameters from insertutils
- stop ingestion after first error similar to elasticsearch and jsonline
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* app/vlinsert/loki: address review feedback
- add missing logstorage.PutLogRows calls
- refactor tenant ID parsing to use common function
- reduce number of allocations for parsing by reusing logfields slices
- add tests and benchmarks for requests processing funcs
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
---------
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
This eliminates the need in .(*T) casting for results obtained from Load()
Leave atomic.Value for map, since atomic.Pointer[map[...]...] makes double pointer to map,
because map is already a pointer type.
The following syntax is supported: _time:filter offset off
For example:
- _time:5m offset 1h - 5-minute duration one hour before the current time
- _time:2023 offset 2w - 2023 year with the 2 weeks offset in the past
- Sort MetricName tags only once before the benchmark loop.
- Obtain indexSearch per each benchmark loop in order to give a chance for background merge
for the recently created parts
Previously all the newly ingested time series were registered in global `MetricName -> TSID` index.
This index was used during data ingestion for locating the TSID (internal series id)
for the given canonical metric name (the canonical metric name consists of metric name plus all its labels sorted by label names).
The `MetricName -> TSID` index is stored on disk in order to make sure that the data
isn't lost on VictoriaMetrics restart or unclean shutdown.
The lookup in this index is relatively slow, since VictoriaMetrics needs to read the corresponding
data block from disk, unpack it, put the unpacked block into `indexdb/dataBlocks` cache,
and then search for the given `MetricName -> TSID` entry there. So VictoriaMetrics
uses in-memory cache for speeding up the lookup for active time series.
This cache is named `storage/tsid`. If this cache capacity is enough for all the currently ingested
active time series, then VictoriaMetrics works fast, since it doesn't need to read the data from disk.
VictoriaMetrics starts reading data from `MetricName -> TSID` on-disk index in the following cases:
- If `storage/tsid` cache capacity isn't enough for active time series.
Then just increase available memory for VictoriaMetrics or reduce the number of active time series
ingested into VictoriaMetrics.
- If new time series is ingested into VictoriaMetrics. In this case it cannot find
the needed entry in the `storage/tsid` cache, so it needs to consult on-disk `MetricName -> TSID` index,
since it doesn't know that the index has no the corresponding entry too.
This is a typical event under high churn rate, when old time series are constantly substituted
with new time series.
Reading the data from `MetricName -> TSID` index is slow, so inserts, which lead to reading this index,
are counted as slow inserts, and they can be monitored via `vm_slow_row_inserts_total` metric exposed by VictoriaMetrics.
Prior to this commit the `MetricName -> TSID` index was global, e.g. it contained entries sorted by `MetricName`
for all the time series ever ingested into VictoriaMetrics during the configured -retentionPeriod.
This index can become very large under high churn rate and long retention. VictoriaMetrics
caches data from this index in `indexdb/dataBlocks` in-memory cache for speeding up index lookups.
The `indexdb/dataBlocks` cache may occupy significant share of available memory for storing
recently accessed blocks at `MetricName -> TSID` index when searching for newly ingested time series.
This commit switches from global `MetricName -> TSID` index to per-day index. This allows significantly
reducing the amounts of data, which needs to be cached in `indexdb/dataBlocks`, since now VictoriaMetrics
consults only the index for the current day when new time series is ingested into it.
The downside of this change is increased indexdb size on disk for workloads without high churn rate,
e.g. with static time series, which do no change over time, since now VictoriaMetrics needs to store
identical `MetricName -> TSID` entries for static time series for every day.
This change removes an optimization for reducing CPU and disk IO spikes at indexdb rotation,
since it didn't work correctly - see https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1401 .
At the same time the change fixes the issue, which could result in lost access to time series,
which stop receving new samples during the first hour after indexdb rotation - see https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2698
The issue with the increased CPU and disk IO usage during indexdb rotation will be addressed
in a separate commit according to https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1401#issuecomment-1553488685
This is a follow-up for 1f28b46ae9
The number of parts in the snapshot partition may be zero if concurrent goroutine just
started creating new partition, but didn't put data into it yet when the current
goroutine made a snapshot.
* docs: make `httpAuth.*` flags description less ambiguous
Currently, it may confuse users whether `httpAuth.*` flags are used by HTTP client or server configuration(see https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4586 for example).
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* docs: fix a typo
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
---------
Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
* fix removing storage data dir before restoring from backup
Signed-off-by: Alexander Marshalov <_@marshalov.org>
* fix review comment
Signed-off-by: Alexander Marshalov <_@marshalov.org>
* fix review comment
Signed-off-by: Alexander Marshalov <_@marshalov.org>
* fixes after merge with `enterprise-single-node` branch
Signed-off-by: Alexander Marshalov <_@marshalov.org>
---------
Signed-off-by: Alexander Marshalov <_@marshalov.org>
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>
