It is a one-way street since older versions do not support float histograms. If you are trying native histograms already, we recommend you remove the wal directory when upgrading.īecause the old WAL record for native histograms is not backward compatible in v2.42.0, this will lead to some data loss for the latest data.Īdditionally, if you scrape 'float histograms' or use recording rules on native histograms in v2.42.0 (which writes float histograms), This release comes with a bunch of feature coverage for native histograms and breaking changes. TSDB: Use the correct unit (seconds) when recording out-of-order append deltas in the prometheus_tsdb_sample_ooo_delta metric.TSDB: Correctly update prometheus_tsdb_head_chunks_removed_total and prometheus_tsdb_head_chunks metrics when reading WAL.

Scrape: Fix prometheus_target_scrape_pool_target_limit metric not set before reloading.UI: Scope group by labels to metric in autocompletion.TSDB: Improve Prometheus parser error outputs to be more comprehensible.TSDB: Automatically remove incorrect snapshot with index that is ahead of WAL.TSDB: Add metrics for head chunks and WAL folders size.Scrape: Allow exemplars for all metric types.API: Change HTTP status code from 503/422 to 499 if a request is canceled.API: Add support for setting lookback delta per query via the API.HTTP client: Add proxy_from_enviroment to read proxies from env variables.HTTP client: Add no_proxy to exclude URLs from proxied requests.Scrape: Add include_scrape_configs to include scrape configs from different files.Promtool: Add HTTP client configuration to query commands.We are providing release artefactsĢ.43.0+stringlabels and Docker images tagged v2.43.0-stringlabels with those

The gains on their production architecture.

To encourage users who are interested in these improvements to help us measure Resulting in a smaller heap size and some speedups in most cases. Structure for labels that uses a single string to hold all the label/values, (therefore they are not shipped in the default binaries). We are working on some performance improvements in Prometheus, which are onlyīuilt into Prometheus when compiling it using the Go tag stringlabels

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