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61 commits

Author SHA1 Message Date
Aliaksandr Valialkin
c05d443791 app/vmselect/promql: add deriv_fast function for calculating fast derivative 
`deriv_fast` calculates derivative based on the first and the last point on the interval
instead of calculating linear regression based on all the data points on the interval.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/73
 2019-06-21 23:05:48 +03:00
Aliaksandr Valialkin
98eafdbd58 app/vmselect/promql: use linear regression in deriv func like Prometheus does 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/73
 2019-06-21 22:54:34 +03:00
Aliaksandr Valialkin
f334908c22 app/vmselect/promql: ajdust data model to the model used in Prometheus 
Do not take into account data points on the range `[timestamp .. timestamp+step)`
when calculating value on the given `timestamp`.
Use only data points from the past when performing these calculations like Prometheus does.

This should reduce discrepancies between results returned by VictoriaMetrics
and results returned by Prometheus.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/72
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/71
 2019-06-21 21:55:25 +03:00
Aliaksandr Valialkin
837e349b7d app/vmselect/promql: do not strip __name__ form time series after binary comparison operation 
Example:

  foo > 10

Would leave `foo` name for all the matching time series on the left.
 2019-06-21 13:08:02 +03:00
Aliaksandr Valialkin
e84b7641ef app/vmselect/promql: remove unused func keepLastValue; updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/69 2019-06-20 14:35:19 +03:00
Aliaksandr Valialkin
db042bf6d6 app/vmselect/promql: typo fix; updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/69 2019-06-20 14:33:52 +03:00
Aliaksandr Valialkin
3838d224d5 app/vminsert/opentsdb: remove unused const maxReadPacketSize; update https://github.com/VictoriaMetrics/VictoriaMetrics/issues/69 2019-06-20 14:30:02 +03:00
Aliaksandr Valialkin
a3a53647ba app/vmselect/prometheus: return better error messages on missing args to /api/v1/* 2019-06-20 14:07:44 +03:00
Aliaksandr Valialkin
a0c22a6830 app/vmstorage: add vm_cache_entries{type="storage/hour_metric_ids"} metric for tracking active time series count 2019-06-19 18:37:38 +03:00
Aliaksandr Valialkin
d4ed6189d4 app/vminsert/graphite: allow skipping timestamps in Graphite plaintext protocol 
In this case VictoriaMetrics uses the ingestion time as a timestamp.
 2019-06-18 19:05:46 +03:00
Aliaksandr Valialkin
e40224d5de lib/flagutil: add NewArray helper func 2019-06-18 10:44:09 +03:00
Aliaksandr Valialkin
3b16d49514 app/vminsert/influx: add -influxSkipSingleField flag for using {measurement} instead of {measurement}{separator}{field_name} for Influx lines with a single field 
Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/66
 2019-06-17 19:05:46 +03:00
Aliaksandr Valialkin
5f0b3589b2 app/vminsert/influx: add -influxMeasurementFieldSeparator flag for the ability to change separator for {measurement}{separator}{field_name} metric name 2019-06-14 09:57:13 +03:00
Aliaksandr Valialkin
947bc16f8c app/vmselect/promql: use dynamic limit on memory for concurrent queries 2019-06-12 23:18:23 +03:00
Aliaksandr Valialkin
8567e3463d app/vmselect/promql: merge non-overlapping duplicate time series in group_left and group_right joins 2019-06-12 20:33:01 +03:00
Aliaksandr Valialkin
88005237f4 app/vmselect/promql: swap binary operation with modifier in the error message for improved readability 2019-06-12 17:14:33 +03:00
Aliaksandr Valialkin
a71381ad2a app/vmselect/promql: list a sample of duplicate time series in the error message for group_left or group_right 
This should improve troubleshooting for complex queries involving `group_left` and `group_right` modifiers.
 2019-06-12 16:57:34 +03:00
Aliaksandr Valialkin
18d6f293f7 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 01:55:18 +03:00
Aliaksandr Valialkin
3437c30180 all: try hard removing directory with contents 
Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/61
 2019-06-11 01:58:08 +03:00
Aliaksandr Valialkin
eea7da8e0c app/vmselect/promql: prevent from count_values explosion of timeseries, which could result in OOM 2019-06-11 01:03:18 +03:00
Aliaksandr Valialkin
e87a602209 app/vmselect/promql: skip superflouos timestamps copying in count_values 2019-06-11 00:44:09 +03:00
Aliaksandr Valialkin
ec84febc1c app/vmselect/promql: remove superflouos timeseries copy in histogram_quantile func 2019-06-11 00:39:35 +03:00
Aliaksandr Valialkin
1fab34fb5c app/vmselect/promql: remove superflouos timeseries copy in union func 2019-06-11 00:35:09 +03:00
Aliaksandr Valialkin
a6f368499d app/vmselect/promql: skip NaN values in count_values func 2019-06-10 22:42:41 +03:00
Aliaksandr Valialkin
945894e049 app/vmselect: properly handle empty label (aka __name__) in LabelEntries handler 2019-06-10 19:55:02 +03:00
Aliaksandr Valialkin
75a0acf72d app/vmselect: add /api/v1/labels/count handler for quick detection of labels with the maximum number of distinct values 2019-06-10 19:54:55 +03:00
Aliaksandr Valialkin
547bcdce63 app/vmstorage: enable compression of responses to vmselect by default 
This should save vmstorage => vmselect network bandwidth in common case
when recently added data is queried.
 2019-06-10 14:54:59 +03:00
Aliaksandr Valialkin
d54f5fec0b lib/storage: skip adaptive searching for tag filter matching the minimum number of metrics if the identical previous search didn't found such filter 
This should improve speed for searching metrics among high number of time series
with high churn rate like in big Kubernetes clusters with frequent deployments.
 2019-06-10 14:07:47 +03:00
Aliaksandr Valialkin
4c3913290a app/vmstorage: add missing _total suffixes to newly added metrics 2019-06-09 22:11:41 +03:00
Aliaksandr Valialkin
d882afa905 lib/storage: optimize time series lookup for recent hours when the db contains many millions of time series with high churn rate (aka frequent deployments in Kubernetes) 2019-06-09 19:14:04 +03:00
Aliaksandr Valialkin
5fcdb4a59a app/vminsert: improve handling of unhealthy vmstorage nodes 
* Spread load evenly among remaining healthy nodes instead of hammering
  the next node after the unhealthy node.
* Make sure that the packet is flushed to storage node before returning success.
  Previously packets could stay in local buffers and thus lost on connection errors.
* Keep rows in the limited memory when all the storage nodes are unhealthy.
 2019-06-09 00:42:36 +03:00
Aliaksandr Valialkin
0f64673327 app/vminsert/concurrencylimiter: typo fix in the error message 2019-06-08 22:43:56 +03:00
Aliaksandr Valialkin
89a113cb5d app/vminsert: really fix #60 
ReadLinesBlock may accept dstBuf with non-zero length. In this case the last line without trailing newline isn't read.
Fix this by comparing len(dstBuf) to 0 instead of its original length.
 2019-06-07 23:40:10 +03:00
Aliaksandr Valialkin
e1c45b314a app/vminsert: properly read trailing line without newline in the end 
This fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/60
 2019-06-07 23:18:34 +03:00
Aliaksandr Valialkin
8cf0a0e59c app/vminsert: split vm_rows_inserted_total into per-(accountID, projectID) metrics 
Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/59
 2019-06-07 22:11:20 +03:00
Aliaksandr Valialkin
913f888d0c app/vmselect/promql: properly handle {__name__ op "string"} queries 
This has been broken in 7294ef333ad26f4f6578b783e97649e58b1f8945 .
 2019-06-07 02:02:09 +03:00
Aliaksandr Valialkin
11979e4d85 app/vmselect/prometheus: report about incorrect time or duration instead of silently using the default value 
This should prevent from incorrect usage of the querying API.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/52
 2019-06-06 22:17:15 +03:00
Aliaksandr Valialkin
5f2aa4539a app/vminsert: add multi-tenancy support for OpenTSDB and Graphite ingestion via custom tags 
* VictoriaMetrics_AccountID tag may be used for setting AccountID
* VictoriaMetrics_ProjectID tag may be used for setting ProjectID
 2019-06-06 18:07:30 +03:00
Aliaksandr Valialkin
8f4790625d app/vmselect/promql: return the correct time series from quantile 
Previously arbitrary time series could be returned from `quantile`
depending on sort order for the last data point in the selected range.

Fix this by returning the calculated time series.

Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/55
 2019-06-06 17:33:53 +03:00
Aliaksandr Valialkin
2ff0d595b0 app/vmselect/promql: add -search.disableCache flag for disabling response caching 
This may be useful for data back-filling, when the response caching
could interfere badly with newly added data points with timestamps
in the past.
 2019-06-04 17:30:41 +03:00
Aliaksandr Valialkin
ba58af9d8c app/vminsert/influx: take into account all the tags for consistent hash calculations 2019-06-03 22:54:21 +03:00
Aliaksandr Valialkin
db21d46417 app/vminsert: emulate influx/query request, which is required for TSBS benchmark 2019-06-03 18:39:46 +03:00
Aliaksandr Valialkin
31d6566aff app/vminsert: accept data on /insert/<accountID>/prometheus/api/v1/write 2019-06-03 18:18:09 +03:00
Aliaksandr Valialkin
a06b7f7f84 app/vmselect/netstorage: remove spammy error message when certain vmstorage nodes are unavailable during query execution 
The amount of partial responses may be tracked by `vm_partial_search_results_total` metric.
 2019-06-03 17:09:50 +03:00
Aliaksandr Valialkin
53242105fb app/vmselect/promql: allow escaping identifiers with \ and \xXX 
Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/42
 2019-05-31 17:35:54 +03:00
Aliaksandr Valialkin
ee776ca8fc app/vminsert: add -maxConcurrentInserts command-line flag for limiting the number of concurrent inserts 2019-05-29 12:40:22 +03:00
Aliaksandr Valialkin
a4ec139a4a app/vminsert: reduce memory usage for Influx, Graphite and OpenTSDB protocols 
Do not buffer per-connection data and just store it as it arrives
 2019-05-28 18:47:52 +03:00
Aliaksandr Valialkin
a6d02ff275 lib/timerpool: use timer pool in concurrency limiters 
This should reduce the number of memory allocations in highly loaded system
 2019-05-28 17:30:10 +03:00
Aliaksandr Valialkin
b7a91d6ba7 app/vmselect: update comment according to the updated code 2019-05-26 22:39:09 +03:00
Aliaksandr Valialkin
15d1e15ae6 app/vminsert/influx: try converting string values to numeric values, since Influx agents may send numeric values as strings 
Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/34
 2019-05-26 22:12:55 +03:00