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151 Commits

Author SHA1 Message Date
Aliaksandr Valialkin
a60e03b3a7
lib/vmselectapi: use string type for tagKey and tagValuePrefix args at TagValueSuffixes() 
This improves the API consistency
 2022-07-06 12:37:53 +03:00
Aliaksandr Valialkin
a14188dd8e
app/vmselect: expose additional histograms at /metrics page, which may help get more insights for the query workload 
This commit is based on https://github.com/VictoriaMetrics/VictoriaMetrics/pull/2792
 2022-06-28 20:18:13 +03:00
Aliaksandr Valialkin
a350d1e81c
lib/storage: return marshaled metric names from SearchMetricNames 
Previously SearchMetricNames was returning unmarshaled metric names.
This wasn't great for vmstorage, which should spend additional CPU time
for marshaling the metric names before sending them to vmselect.

While at it, remove possible duplicate metric names, which could occur when
multiple samples for new time series are ingested via concurrent requests.

Also sort the metric names before returning them to the client.
This simplifies debugging of the returned metric names across repeated requests to /api/v1/series
 2022-06-28 18:17:15 +03:00
Aliaksandr Valialkin
e578549b8a
app/vmselect: optimize /api/v1/series a bit for time ranges smaller than one day 2022-06-28 13:02:47 +03:00
Aliaksandr Valialkin
ba514284f1
lib/storage: add querytracer to more contexts 
querytracer has been added to the following storage.Storage methods:
- RegisterMetricNames
- DeleteMetrics
- SearchTagValueSuffixes
- SearchGraphitePaths
 2022-06-27 13:45:51 +03:00
Aliaksandr Valialkin
9a314106ca
app/vmselect/netstorage: remove Get prefix from netstorage functions 
This makes these function names more consistent with the server side
 2022-06-27 00:45:05 +03:00
Aliaksandr Valialkin
ec7963208d
app/vmselect: accept focusLabel query arg at /api/v1/status/tsdb 
This allows filling the seriesCountByFocusLabelValue list in the /api/v1/status/tsdb response
with label values for the specified focusLabel, which contain the highest number of time series.

TODO: add this to Cardinality explorer at VMUI - https://docs.victoriametrics.com/#cardinality-explorer
 2022-06-14 18:36:54 +03:00
Aliaksandr Valialkin
374beb350e
app/vmselect: optimize /api/v1/labels and /api/v1/label/.../values handlers when match[] query arg is passed to them 2022-06-12 04:32:13 +03:00
Aliaksandr Valialkin
89b778902b
app/vmselect: add optional limit query arg to /api/v1/labels and /api/v1/label_values endpoints 
This arg allows limiting the number of sample values returned from these APIs
 2022-06-10 09:50:33 +03:00
Aliaksandr Valialkin
2bcb960f17
all: improve query tracing coverage for indexdb search 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1403
 2022-06-09 20:07:07 +03:00
Aliaksandr Valialkin
12ac255dae
lib/querytracer: make it easier to use by passing trace context message to New and NewChild 
The context message can be extended by calling Donef.
If there is no need to extend the message, then just call Done.
 2022-06-08 21:06:52 +03:00
Aliaksandr Valialkin
41958ed5dd
all: add initial support for query tracing 
See https://docs.victoriametrics.com/Single-server-VictoriaMetrics.html#query-tracing

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1403
 2022-06-01 02:29:23 +03:00
Aliaksandr Valialkin
6e364e19ef
app/vmselect: add fine-grained limits for the number of returned/scanned time series for various APIs 2022-03-26 11:29:49 +02:00
Aliaksandr Valialkin
4bdd10ab90
lib/bytesutil: split Resize* funcs to MayOverallocate and NoOverallocate for more fine-grained control over memory allocations 
Follow-up for f4989edd96

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2007
 2022-02-01 00:18:42 +02:00
Aliaksandr Valialkin
f4989edd96
lib/bytesutil: split Resize() into ResizeNoCopy() and ResizeWithCopy() functions 
Previously bytesutil.Resize() was copying the original byte slice contents to a newly allocated slice.
This wasted CPU cycles and memory bandwidth in some places, where the original slice contents wasn't needed
after slize resizing. Switch such places to bytesutil.ResizeNoCopy().

Rename the original bytesutil.Resize() function to bytesutil.ResizeWithCopy() for the sake of improved readability.

Additionally, allocate new slice with `make()` instead of `append()`. This guarantees that the capacity of the allocated slice
exactly matches the requested size. The `append()` could return a slice with bigger capacity as an optimization for further `append()` calls.
This could result in excess memory usage when the returned byte slice was cached (for instance, in lib/blockcache).

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2007
 2022-01-25 15:24:44 +02:00
Aliaksandr Valialkin
92070cbb67
lib/storage: return dedup interval in milliseconds from GetDedupInterval() 
This removes duplicate .Milliseconds() calls after GetDedupInterval() calls.
 2021-12-15 13:26:38 +02:00
Aliaksandr Valialkin
1d20a19c7d
lib/storage: explicitly pass dedupInterval to DeduplicateSamples() and deduplicateSamplesDuringMerge() 
This improves the code readability and debuggability, since the output of these functions
stops depending on global state.
 2021-12-14 20:49:12 +02:00
Aliaksandr Valialkin
8ed95e82c6
app/vmselect/promql: follow-up after 57b3320478 2021-09-24 01:24:18 +03:00
Aliaksandr Valialkin
f4dead529f lib/storage: properly search series by multiple tag filters matching empty labels such as foo{bar=~"baz|",x=~"y|"} 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1601
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/395
 2021-09-09 21:09:21 +03:00
Aliaksandr Valialkin
a1911e1330 app/vmselect/netstorage: unpack time series data in mostly local big chunks 
This should improve performance on multi-CPU systems for queries selecting time series with big number of raw samples
 2021-07-30 12:03:17 +03:00
Aliaksandr Valialkin
74ffaa45d9 app/vmselect/netstorage: do not query Go maps with unsafe string keys, since this breaks in Go 1.17 2021-07-30 09:57:53 +03:00
Aliaksandr Valialkin
8ee8660ac4 app/vmselect: follow-up for 626073bca8 
* Rename -search.maxMetricsPointSearch to -search.maxSamplesPerQuery, so it is more consistent with the existing -search.maxSamplesPerSeries
* Move the -search.maxSamplesPerQuery from vmstorage to vmselect, so it could effectively limit the number of raw samples obtained from all the vmstorage nodes
* Document the -search.maxSamplesPerQuery in docs/CHANGELOG.md
 2021-07-28 18:00:23 +03:00
Aliaksandr Valialkin
95aff47330 app/vmselect: prevent from possible deadlock when f callback blocks inside RunParallel 2021-07-26 15:47:30 +03:00
Aliaksandr Valialkin
ed10141ff8 app/vmselect/netstorage: use more scalable algorithm for ditributing the work among among multiple channels on systems with big number of CPU cores 2021-07-16 00:35:23 +03:00
Aliaksandr Valialkin
f4e81aef7e app/vmselect/netstorage: add -search.maxSamplesPerSeries command-line option for limiting the number of samples a query can process per each series 
This should prevent from out of memory crashes like in https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1067
 2021-07-15 16:03:28 +03:00
Aliaksandr Valialkin
e6ef97a5ee app/vmselect/netstorage: improve scalability of series unpacking on multi-CPU systems 2021-07-15 15:41:58 +03:00
Aliaksandr Valialkin
832651c6c2 app/vmselect: follow up after 8a0678678b 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1168
 2021-05-12 17:18:30 +03:00
Nikolay
8a0678678b
Adds tsdb match filters (#1282) 
* init work on filters

* init propose for status filters

* fixes tsdb status
adds test

* fix bug

* removes checks from test
 2021-05-12 15:18:45 +03:00
Aliaksandr Valialkin
7962cf1af8 app/vmselect: prevent from possible incomplete query results after timed out query 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/711
 2021-03-30 13:35:45 +03:00
Aliaksandr Valialkin
7bc728bf53 app/vmselect: add vm_index_search_duration_seconds histogram for monitoring the performance of index search 2021-03-17 01:17:41 +02:00
Aliaksandr Valialkin
0ce557951f app/vmselect/netstorage: reduce mutex contention when unpacking data on a system with high number of CPU cores 2021-03-16 21:51:31 +02:00
Aliaksandr Valialkin
c4756f94da app/vmselect/netstorage: reuse timeseriesWork objects in order to reduce memory allocations 2021-02-16 16:08:53 +02:00
Aliaksandr Valialkin
5a401225c7 app/vmselect/netstorage: use unsafe string as a key for a map when the map already contains the given key 
This should prevent from a memory allocation and a string copy.
 2021-02-16 15:43:10 +02:00
Aliaksandr Valialkin
553016ea99 lib/storage: disable composite index usage when querying old data 2021-02-10 14:57:50 +02:00
Aliaksandr Valialkin
c7dccebaef lib/storage: optimize search by label filters matching big number of time series 2021-02-10 00:44:54 +02:00
Aliaksandr Valialkin
157c02622b app/vmselect: add ability to set Graphite-compatible filter via {__graphite__="foo.*.bar"} syntax 2021-02-03 01:21:54 +02:00
Aliaksandr Valialkin
4146fc4668 all: properly handle CPU limits set on the host system/container 
This can reduce memory usage on systems with enabled CPU limits.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/946
 2020-12-08 21:07:29 +02:00
Aliaksandr Valialkin
007dbf273d app/vmselect/graphite: remove duplicate name tag from /tags/autoComplete/tags handler 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/942
 2020-12-07 01:08:52 +02:00
Aliaksandr Valialkin
f765985947 lib/fs: replace fs.OpenReaderAt with fs.MustOpenReaderAt 
All the callers for fs.OpenReaderAt expect that the file will be opened.
So it is better to log fatal error inside fs.MustOpenReaderAt instead of leaving this to the caller.
 2020-11-23 09:57:21 +02:00
Aliaksandr Valialkin
cf18df367d app/vmselect/netstorage: apply Graphite filter after substituting __name__ with name 2020-11-16 15:52:16 +02:00
Aliaksandr Valialkin
86f99c6b55 app/vmselect/graphite: add /tags/autoComplete/tags handler from Graphite Tags API 
See https://graphite.readthedocs.io/en/stable/tags.html#auto-complete-support
 2020-11-16 14:50:05 +02:00
Aliaksandr Valialkin
465923b181 app/vmselect/graphite: add /tags/findSeries handler from Graphite Tags API 
See https://graphite.readthedocs.io/en/stable/tags.html#exploring-tags
 2020-11-16 12:53:13 +02:00
Aliaksandr Valialkin
414cd39659 app/vmselect/graphite: apply filter then limit 2020-11-16 04:09:14 +02:00
Aliaksandr Valialkin
d100341394 app/vmselect/graphite: add /tags/<tag_name> handler for Graphite Tags API 2020-11-16 03:42:25 +02:00
Aliaksandr Valialkin
6251762787 app/vmselect/graphite: add /tags handler from Graphite Tags API 
See https://graphite.readthedocs.io/en/stable/tags.html#exploring-tags
 2020-11-16 03:00:01 +02:00
Aliaksandr Valialkin
b378cd6ed8 app/vmselect: optimize querying for /api/v1/labels and /api/v1/label/<name>/values when start and end args are set 2020-11-05 01:01:33 +02:00
Aliaksandr Valialkin
caeb74f068 app/vmselect: reduce memory usage when query touches big number of time series 2020-11-04 17:04:04 +02:00
Aliaksandr Valialkin
1b3efccb24 app/vmselect: stop /api/v1/export/* execution if client disconnects 2020-09-27 23:53:13 +03:00
Aliaksandr Valialkin
95688cbfc5 all: add native format for data export and import 
The data can be exported via [/api/v1/export/native](https://victoriametrics.github.io/#how-to-export-data-in-native-format) handler
and imported via [/api/v1/import/native](https://victoriametrics.github.io/#how-to-import-data-in-native-format) handler.
 2020-09-27 19:54:07 +03:00
Aliaksandr Valialkin
82973f8ae7 Revert "lib/storage: remove unused fetchData arg from BlockRef.MustReadBlock" 
This reverts commit bab6a15ae0.

Reason for revert: the `fetchData` arg is used in cluster branch.
Leaving this arg in master branch makes smaller the diff with cluster branch.
 2020-09-24 22:44:23 +03:00
Aliaksandr Valialkin
bab6a15ae0 lib/storage: remove unused fetchData arg from BlockRef.MustReadBlock 
This arg became unused after 23bdc1f107
 2020-09-24 20:48:40 +03:00
Aliaksandr Valialkin
23bdc1f107 app/vmselect/netstorage: do not spend CPU time on unpacking empty blocks during /api/v1/series calls 2020-09-24 20:18:10 +03:00
Aliaksandr Valialkin
bed25e3c24 app/vmselect/netstorage: properly pre-allocate space for sbs 2020-09-22 23:49:55 +03:00
Aliaksandr Valialkin
09b0f7c202 app/vmselect/netstorage: release search resources on timeout errors 
Previously these resources weren't released, which could lead to resource leaks.
 2020-09-22 22:57:38 +03:00
Aliaksandr Valialkin
1fec47a289 app/vmselect/netstorage: reduce memory usage when the time range from query touches big number of samples per each time series 2020-09-15 21:08:28 +03:00
Aliaksandr Valialkin
f0005c3007 app/vmselect: move Deadline from netstorage to searchutils 
This removes dependency on netstorage from searchutils.
 2020-09-11 13:27:13 +03:00
Aliaksandr Valialkin
f6bc608e86 app/vmselect: initial implementation of Graphite Metrics API 
See https://graphite-api.readthedocs.io/en/latest/api.html#the-metrics-api
 2020-09-11 00:30:01 +03:00
Aliaksandr Valialkin
8adba82c02 app/vmselect/netstorage: vary batch size for data unpacking depending on the available CPU cores 
This should reduce contention on the channel with unpack work for systems with high number of CPU cores
 2020-08-10 15:16:42 +03:00
Aliaksandr Valialkin
f3d33e23c9 app/vmstorage: improve error logging when the request times out 2020-08-10 13:23:26 +03:00
Aliaksandr Valialkin
bc8381613d app/vmselect: reduce memory allocations by pre-allocatin memory for time series map and for a list of time series names 2020-08-06 19:17:58 +03:00
Aliaksandr Valialkin
3f85c06b65 app/vmselect/netstorage: reduce CPU contention when upacking time series blocks by unpacking batches of such blocks instead of a single block 
This should improve query performance on systems with big number of CPU cores (16 and more)
 2020-08-06 17:50:17 +03:00
Aliaksandr Valialkin
d20c2156e4 app/vmselect/netstorage: reduce contention on unpackworkCh and timeseriesWorkCh for multi-CPU system by providing more capacity for these chans 2020-08-06 17:22:48 +03:00
Aliaksandr Valialkin
039c9d2441 lib/storage: respect -search.maxQueryDuration when searching for time series in inverted index 
Previously the time spent on inverted index search could exceed the configured `-search.maxQueryDuration`.
This commit stops searching in inverted index on query timeout.
 2020-07-23 21:21:42 +03:00
Aliaksandr Valialkin
2a45871823 lib/storage: add more fine-grained pace limiting for search 2020-07-23 19:26:08 +03:00
Aliaksandr Valialkin
461481fbdf app/vmselect/netstorage: protect from too smart compiler, which may break memory usage optimization in ProcessSearchQuery 2020-07-23 17:54:01 +03:00
Aliaksandr Valialkin
e79de9774b app/vmselect: typo fix after 34563916f7 2020-07-23 14:12:28 +03:00
Aliaksandr Valialkin
34563916f7 app/vmselect: reduce memory usage when querying big number of time series with long labels 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/646
 2020-07-23 13:53:52 +03:00
Aliaksandr Valialkin
dfb113f175 app/vmselect/netstorage: reduce memory allocations when unpacking time series data by using a pool for unpackWork entries 
This should slightly reduce load on GC when processing queries that touch big number of time series.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/646 according to the provided memory profile there.
 2020-07-22 15:03:57 +03:00
Aliaksandr Valialkin
caa2952aa6 app/vmselect: take into account the time spent in wait queue before query execution as time spent on the query 2020-07-21 19:00:09 +03:00
Aliaksandr Valialkin
e4e1cd1de2 app/vmselect: fix nil pointer dereference panic when unsuccessfully querying vmstorage 2020-07-16 19:15:43 +03:00
Aliaksandr Valialkin
84a37098ed app/vmstorage: add -denyQueriesOutsideRetention command-line flag for denying queries outside the configured retention 
VictoriaMetrics returns `503 Service Unavailable` http error for requests with time ranges outside the configured retention
if `-denyQueriesOutsideRetention` command-line flag is set.
 2020-07-01 00:21:44 +03:00
Aliaksandr Valialkin
d5dddb0953 all: use %w instead of %s for wrapping errors in fmt.Errorf 
This will simplify examining the returned errors such as httpserver.ErrorWithStatusCode .
See https://blog.golang.org/go1.13-errors for details.
 2020-06-30 23:05:11 +03:00
Aliaksandr Valialkin
05d754d7bb app/vmselect/netstorage: reset big result values every 10 seconds instead of after processing every time series 
This should reduce GC pressure when processing time series with big number of rows
 2020-06-24 19:38:39 +03:00
Aliaksandr Valialkin
7209d58fbd app/vmselect/netstorage: increase concurrency when processing small number of time series with big number of data points per each time series 
Previously VictoriaMetrics was processing up to 32 time series in a single goroutine.
This could be slow if each time series contains big number of data points (10M+ or more), since only a single CPU core could be loaded with work,
while other CPU cores were idle. Fix this by launching GOMAXPROCS workers for time series processing.

This should help with https://github.com/VictoriaMetrics/VictoriaMetrics/issues/572
 2020-06-23 22:46:15 +03:00
Aliaksandr Valialkin
b4afe562c1 lib/storage: postpone reading data from blocks during search 
This eliminates the need for storing block data into temporary files on a single-node VictoriaMetrics
during heavy queries, which touch big number of time series over long time ranges.

This improves single-node VM performance on heavy queries by up to 2x.
 2020-04-27 11:45:24 +03:00
Aliaksandr Valialkin
fcf57f9883 app/vmselect/netstorage: substitute sorting packedTimeseries with the natural order of the fetched blocks 
This should minimize the number of disk seeks when reading data from temporary file.
 2020-04-26 16:26:23 +03:00
Aliaksandr Valialkin
364db13c9c app/vmselect: add /api/v1/status/tsdb page with useful stats for locating root cause for high cardinality issues 
See https://prometheus.io/docs/prometheus/latest/querying/api/#tsdb-stats

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/425
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/268
 2020-04-22 22:03:43 +03:00
Aliaksandr Valialkin
318326c309 lib/storage: properly handle {label=~"foo|"} filters as Prometheus does 
Such filters must match all the time series with `label="foo"` plus all the time series without `label`

Previously only time series with `label="foo"` were matched.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/395
 2020-03-31 00:48:18 +03:00
Aliaksandr Valialkin
18af31a4c2 all: properly split vm_deduplicated_samples_total among cluster components 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/345
 2020-02-27 23:48:07 +02:00
Aliaksandr Valialkin
c3d86eef96 all: add -dedup.minScrapeInterval command-line flag for data de-duplication 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/86
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/278
 2020-01-31 01:16:57 +02:00
Aliaksandr Valialkin
d70ba7eb37 lib/fs: optimize small reads for ReaderAt.MustReadAt by reading from memory-mapped space instead of reading from file descriptor 
This should improve performance when reading many small blocks.
 2020-01-30 15:09:05 +02:00
Aliaksandr Valialkin
efc7ad88ec app/vmselect: mention command-line flag, which could be used for adjusting query timeouts, in timeout errors 2020-01-22 15:50:48 +02:00
Aliaksandr Valialkin
cdcacaea6d app/vmselect/netstorage: make fmt 2020-01-17 17:47:21 +02:00
Aliaksandr Valialkin
7327adbc86 app/vmselect/netstorage: limit the maximum size for in-memory buffer for temporary blocks file 
This should reduce memory usage on systems with more than 8GB RAM.
 2020-01-17 16:28:21 +02:00
Aliaksandr Valialkin
5b75984aa9 app/vmselect/netstorage: move MustAdviseSequentialRead to lib/fs 2019-12-23 23:16:11 +02:00
Aliaksandr Valialkin
96ff8d9adb app/vmselect: add ability to pass match[], start and end to /api/v1/labels 
This makes the `/api/v1/labels` handler consistent with already existing functionality for `/api/v1/label/.../values`.

See https://github.com/prometheus/prometheus/issues/6178 for more details.
 2019-12-15 00:20:50 +02:00
Aliaksandr Valialkin
20812008a7 lib/storage: remove metricID with missing metricID->metricName entry 
The metricID->metricName entry can be missing in the indexdb after unclean shutdown
when only a part of entries for new time series is written into indexdb.

Recover from such a situation by removing the broken metricID. New metricID
will be automatically created for time series with the given metricName
when new data point will arive to it.
 2019-12-02 20:46:44 +02:00
Aliaksandr Valialkin
4bb88843cf app/vmselect: add vm_per_query_{rows,series}_processed_count histograms 2019-11-23 13:23:26 +02:00
Aliaksandr Valialkin
4e9e1ca0f7 app/vmselect/netstorage: hint the OS that tmpBlocksFile is read almost sequentially 
This became the case after b7ee2e7af2 .
 2019-09-30 00:11:14 +03:00
Aliaksandr Valialkin
c1d3705be0 app/vmselect/netstorage: marshal block outside tmpBlocksFile.WriteBlock 
This allows re-using the destination buffer for marshaling in the outer loop.
 2019-09-28 21:07:13 +03:00
Aliaksandr Valialkin
b7ee2e7af2 app/vmselect/netstorage: reduce the number of disk seeks when the query processes big number of time series 2019-09-28 21:07:09 +03:00
Aliaksandr Valialkin
1575a560f0 app/vmselect/netstorage: adaptively adjust the maximum inmemory file size for storing temporary blocks 
The maximum inmemory file size now depends on `-memory.allowedPercent`.
This should improve performance and reduce the number of filesystem calls
on machines with big amounts of RAM when performing heavy queries
over big number of samples and time series.
 2019-09-03 13:32:09 +03:00
Aliaksandr Valialkin
9196c085a7 all: port to FreeBSD on GOARCH=amd64 2019-08-28 01:19:23 +03:00
Aliaksandr Valialkin
603a79b357 app/vmstorage: increase default values for search.maxTagKeys, search.maxTagValues and search.maxUniqueTimeseries 2019-08-27 14:29:53 +03:00
Aliaksandr Valialkin
47e4b50112 app/vmselect: optimize /api/v1/series by skipping storage data 
Fetch and process only time series metainfo.
 2019-08-04 23:01:28 +03:00
Aliaksandr Valialkin
afcc7fb167 app/vmselect/netstorage: improve error message when reading data blocks from storage 
Mention the block number in the error. This should simplify troubleshooting in this code.
 2019-07-28 12:12:35 +03:00
Aliaksandr Valialkin
ab88890523 app/vmselect/promql: parallelize incremental aggregation to multiple CPU cores 
This may reduce response times for aggregation over big number of time series
with small step between output data points.
 2019-07-12 15:52:22 +03:00
Aliaksandr Valialkin
419197ba08 lib/fs: consolidate *RemoveAll* funcs into a single MustRemoveAll func 
The func syncs parent dir in order to persist directory removal
in the event of power loss
 2019-06-12 01:53:46 +03:00
Aliaksandr Valialkin
ac7b186f13 all: try hard removing directory with contents 
Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/61
 2019-06-11 01:57:59 +03:00
Aliaksandr Valialkin
cbe692f0e2 app/vmselect: add /api/v1/labels/count handler for quick detection of labels with the maximum number of distinct values 2019-06-10 19:55:38 +03:00