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Changelog

All notable changes to this project are documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

We use the following categories for changes:

  • Added for new features.
  • Changed for changes in existing functionality.
  • Deprecated for soon-to-be removed features.
  • Removed for now removed features.
  • Fixed for any bug fixes.
  • Security in case of vulnerabilities.

Added

  • prom-migrator: Support for passing custom HTTP headers via command line arguments for both reader and writer [#1020].
  • Run timescaledb-tune with the promscale profile [#1615]
  • Propagate the context from received HTTP read requests downstream to database requests [#1205]

Changed

  • Log throughput in the same line for samples, spans and metric metadata [#1643]

Fixed

  • Do not collect telemetry if timescaledb.telemetry_level=off [#1612]
  • Fix broken cache eviction in clockcache [#1603]
  • Possible goroutine leak due to unbuffered channel in select block [#1604]

[0.14.0] - 2022-08-30

Added

  • Implement Jaeger gRPC remote storage writer interface [#1543]
  • Batching for traces to improve ingest performance along with CLI flags for better control [#1554]
  • Helm chart now ships a JSON Schema for imposing a structure of the values.yaml file [#1551]

Changed

Fixed

  • Make Jaeger Event queryable using name and tags [#1553]
  • Reset inverted labels cache on epoch change [#1561]
  • Error column "exemplar_label_values" does not exist (SQLSTATE 42703) on ingesting exemplars [#1574]
  • /labels & /label/{name}/values to respond with labels of authorized tenants only [#1577]

[0.13.0] - 2022-07-20

Added

  • Network latency metric [#1431]
  • Ability to configure reader-pool and writer-pool sizes [#1451]
  • Add ability to specify Deployment annotations and Pod annotations in helm charts [#1495]
  • Deprecate openTelemetry and prometheus top-level objects in helm chart in favour of .service.openTelemetry and .service.prometheus [#1495]
  • Allow disabling exposition of promscale port in Service object. [#1495]
  • Enable prometheus annotation based scraping only when ServiceMonitor is disabled. [#1495]
  • db.connections.writer-pool.synchronous-commit controls whether synchronous_commit is enabled/disabled for writer database connections. [#1499]

Changed

  • db.num-writer-connections now sets the absolute number of write connections for writing metrics. [#1430]
  • Remove flaky PromscaleCacheTooSmall alert [#1498]

Fixed

  • Refine check for existence of prom_schema_migrations table [#1452]
  • Do not run rules-manager in -db.read-only mode [#1451]
  • Fix underlying metric(promscale_sql_database_chunks_count) which leads to false positive firing of PromscaleCompressionLow alert [#1494]

[0.12.1] - 2022-06-29

Fixed

  • Querying traces using boolean tag values [#1457]
  • Fix RE2 regex support for label matching [#1441]

[0.12.0] - 2022-06-21

Added

  • -enable-feature=promql-per-step-stats feature for statistics in PromQL evaluation
  • Add readinessProbe in helm chart [#1266]
  • Set number of ingest copiers to the number of DB CPUs [#1387]
  • Ability to reload rules and alerting config [#1426]
  • Support arrays in trace attribute values [#1381]
  • Support for glob in rule_files [#1443]

Fixed

  • Trace query returns empty result when queried with
    • Tags from process table in Jaeger UI [#1385]
    • Tags that have a numeric value, like http.status_code=200 [#1385]
    • Tags that involve status code [#1384]
  • List label values of allowed tenants only [#1427]
  • Race condition when stopping ingest [#1370]

[0.11.0] - 2022-05-11

Added

  • Alerting rules for Promscale. You can find them here [#1181, #1185, #1271]
  • Add database status and request metrics [#1185]
  • Add database SQL stats as Prometheus metrics. These can be queried under promscale_sql namespace [#1193]
  • Add alerts for database SQL metrics [#1193]
  • Query Jaeger traces directly through Promscale [#1224]
  • Additional dataset configuration options via -startup.dataset.config flag. Read more here [#1276, #1310]
  • Support for alerting and recording rules in Promscale [#1286, #1315]
  • Support for /api/v1/rules & /api/v1/alerts API [#1320]
  • Log mandatory requirement of Promscale extension when upgrading from older versions [#1329]

Changed

  • Enable tracing by default [#1213], [#1290]
  • The Promscale extension is now required, while the Timescaledb extension remains optional. The minimum Timescaledb version supported is now 2.6.1 [#1132], [#1297]
  • Disable running Promscale in HA and read-only simultaneously [#1254]
  • Metric tables and views are now owned by prom_admin [#1283]

Fixed

  • Register promscale_ingest_channel_len_bucket metric and make it a gauge [#1177]
  • Log warning when failing to write response to remote read requests [#1180]
  • Fix Promscale running even when some component may fail to start [#1217]
  • Fix promscale_ingest_max_sent_timestamp_milliseconds metric for tracing [#1270]
  • Fix prom_api.reset_metric_retention_period on two-step continuous aggregates [#1294]

Removed

  • Remove deprecated flags. More info can be found here [#1229]

[0.10.0] - 2022-02-17

Added

  • Add Prometheus metrics support for Tracing [#1102, #1152]
  • Add ingested spans-count to telemetry [#1155]
  • Add OTEL collector exporter endpoint support to Promscale tracing telemetry exporter [#1148]
  • Add example tracing setup to docker-compose [#1024]

Changed

  • Renamed and refactor Promscale metrics for better consistency. New metrics can be found here [#1113]
  • Add performance metrics in cache module in Promscale [#1113]

Fixed

  • Spans with end < start. start and end are swapped in this case. [#1096]
  • Disable push downs which use offset, as they are broken [#1129]
  • Aggregate pushdown evaluation [#1098]
  • Broken extraEnv parameter in helm chart values [#1126]
  • Logging success message if extension update failed [#1139]

[0.9.0] - 2022-02-02

Added

  • Add support to instrument Promscale's Otel GRPC server with Prometheus metrics [#1061]

Changed

  • Optimized series ID creation by caching metric ID [#1062]

Fixed

  • Fix broken promscale_packager telemetry field for docker envs [#1077]
  • Fix compression of old chunks thus reducing storage requirements [#1081]
  • Improved INSERT performance by avoidng ON CONFLICT [#1090]

[0.8.0] - 2022-01-18

Added

  • Allow templating host and uri connection strings in helm chart [#1055]
  • Add ability to configure the default chunk interval on startup [#991]
  • Add ps_trace.delete_all_traces() function to delete all trace data [#1012]
  • Add ps_trace.set_trace_retention_period(INTERVAL) function to set trace retention period [#1015]
  • Add ps_trace.get_trace_retention_period() database function to get current trace retention period [#1015]
  • Add ability to set additional environment variables in helm chart [#1041]
  • Add OpenTelemetry tracing instrumentation to metric ingest codepath

Changed

  • Rename CLI flags to improve user interface [#964]
  • BREAKING: Enable and configure 30 day default retention period for span data [#1015]
  • BREAKING: The promscale_query_batch_duration_seconds metric was renamed to promscale_metrics_query_remote_read_batch_duration_seconds to clarify what it represents. [#1040]

Deprecated

  • Deprecate migrate flag [#964]

Removed

  • Remove deprecated -promql-enable-feature flag [#964]
  • Remove deprecated leader election [#964]
  • Remove obsoleted jaeger-query-proxy

Fixed

  • helm-charts: use fixed target port on svc-promscale [#1009]
  • Fix passing of async flag [#1008]
  • Remove the event_name_check constraint [#979]
  • Fix _prom_catalog.metric_view() function on non-tsdb installs [#958]

[0.7.1] - 2021-12-03

Fixed

  • Fix upgrade scripts

[0.7.0] - 2021-12-02

Added

  • Beta OpenTelemetry Tracing support
  • -enable-feature cli flag
  • Support for Postgres 14
  • helm-chart: tracing support can be enabled with openTelemetry.enable
  • helm-chart: include ServiceAccount definition
  • helm-chart: add ServiceMonitor definition

Changed

  • helm-chart: args section renamed to extraArgs
  • helm-chart: tracing section renamed to openTelemetry
  • helm-chart: improve UX of service configuration
  • helm-chart: move connection details into a secret
  • helm-chart: use stringData to store Secret values

Deprecated

  • The -promql-enable-feature cli flag has been superseded by -enable-feature

Removed

  • Remove deprecated TS_PROM_ prefixed env-var support
  • Remove unused db-connect-retries cli flag

Fixed

  • Fixed a memory leak when using the series endpoint (GET/POST /api/v1/series)
  • helm-chart: allow numbers to be passed as connection parameters
  • helm-chart: fix incorrect annotation setting when prometheus scrape is disabled