Register the st-storage feature flag in the feature registry via
the TSDB options, consistent with how other TSDB features like
exemplar_storage and delayed_compaction are registered.
Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
Coded with Claude Sonnet 4.6.
conf.StorageConfig.TSDBConfig.Retention.Time is model.Duration which is
type-aliased to time.Duration (nanoseconds), but RetentionDuration is int64
in milliseconds. The missing division by time.Millisecond caused the metric
prometheus_tsdb_retention_limit_seconds to be reported 1e6 times too large
after a config reload.
Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com>
Move retention validation from tsdb/db.go into a TSDBRetentionConfig
UnmarshalYAML method so that invalid values are rejected at config
load/reload time rather than at apply time.
- Reject negative retention size values.
- Reject retention percentage values above 100.
- Simplify ApplyConfig to assign retention values unconditionally,
enabling setting a value back to 0 to disable it.
Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com>
* feat(tsdb): allow appending to ST capable XOR chunk optionally
Only for float samples as of now. Supports for in-order and out-of-order
samples.
Make sure that on readout the ST capable chunks are returned automatically.
When the chunks are returned as is, this is trivially true.
When a chunk needs to be re-coded due to deletion (tombstone) markers,
we take the encoding of the original chunk.
When a chunk needs to be created from overlapping chunks, we observe
whether ST is zero or not and create the new chunk based on that.
Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
* RemoveTmpDirs function to tsdbutil
* Refactor db to use RemoveTmpDirs and no longer cleanup checkpoint tmp dirs
* Use RemoveTmpDirs in wlog checkpoint to cleanup all checkpoint tmp folders
* Add tests for RemoveTmpDirs
* Ensure db.Open will still cleanup extra temporary checkpoints
Signed-off-by: Kyle Eckhart <kgeckhart@users.noreply.github.com>
Modernize tsdb package by migrating multi-error handling
to the standard library errors package.
* Add a modernized CloseAll helper.
Signed-off-by: SuperQ <superq@gmail.com>
Guard the stale series ratio calculation by checking numSeries > 0
before computing the ratio. This prevents division by zero when
the head has no series.
Fixes#17949
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
For tests only, we had various ways of opening DB. Reduced to one
instead of:
* Open
* newTestDB
* newTestDBOpts
* openTestDB
This so https://github.com/prometheus/prometheus/pull/17629 is smaller
and bit easier. Also for test maintainability and consistency.
Signed-off-by: bwplotka <bwplotka@gmail.com>
* Delay compactions until Thanos uploads all blocks
Using Thanos sidecar with Prometheus requires us to disable TSDB compactions on Prometheus side by setting --storage.tsdb.min-block-duration and --storage.tsdb.max-block-duration to the same value. See https://thanos.io/tip/components/sidecar.md. The main problem this avoids is that Prometheus might compact given block before Thanos uploads it, creating a gap in Thanos metrics. Thanos does not upload compacted blocks because that would upload the same sample multiple times. You can tell Thanos to upload compacted blocks but that is aimed at one time migrations. This patch creates a bridge between Thanos and Prometheus by allowing Prometheus to read the shipper file Thanos creates, where it tracks which blocks were already uploaded, and using that data delays compaction of blocks until they are marked as uploaded by Thanos. Thanks to this both services can coordinate with each other (in a way) and we can stop disabling compaction on Prometheus side when Thanos uploads are enabled.
The reason to have this is that disabling compactions have very dramatic performance cost. Since most time series exist for longer than a single block duration (2h by default) large chunks of block index will reference the same series, so 10 * 2h blocks will each have an index that is usually fairly big and is almost the same for all 10 blocks. Compaction de-duplicates the index so merging 10 blocks together would leave us with a single index that is around the same size as each of these 10 2h blocks would have (plus some extra for series that only exists in some blocks, but not all). Every range query that iterates over all 10 blocks would then have to read each index and so we're doing 10x more work then if we had a single compacted block.
Signed-off-by: Lukasz Mierzwa <l.mierzwa@gmail.com>
* Rename structs and functions to make this more generic
Signed-off-by: Lukasz Mierzwa <l.mierzwa@gmail.com>
* Address review comments
Signed-off-by: Lukasz Mierzwa <l.mierzwa@gmail.com>
* Cache UploadMeta for 1 minute
Signed-off-by: Lukasz Mierzwa <l.mierzwa@gmail.com>
---------
Signed-off-by: Lukasz Mierzwa <l.mierzwa@gmail.com>
The detailed plan for this is laid out in
https://github.com/prometheus/prometheus/issues/16572 .
This commit adds a global and local scrape config option
`scrape_native_histograms`, which has to be set to true to ingest
native histograms.
To ease the transition, the feature flag is changed to simply set the
default of `scrape_native_histograms` to true.
Further implications:
- The default scrape protocols now depend on the
`scrape_native_histograms` setting.
- Everywhere else, histograms are now "on by default".
Documentation beyond the one for the feature flag and the scrape
config are deliberately left out. See
https://github.com/prometheus/prometheus/pull/17232 for that.
Signed-off-by: beorn7 <beorn@grafana.com>
Right now Prometheus only logs when these operations are completed.
It's a bit surprising to see suddenly a message saying "I was busy doing X for the past N minutes"
so let's add a message when the operation starts, so it's easier to understand what Prometheus was doing at any point in time
when reading logs.
Signed-off-by: Lukasz Mierzwa <l.mierzwa@gmail.com>
* refactor: simplify error handling and remove redundant checks
Signed-off-by: Ryan Wu <rongjun0821@gmail.com>
* Add the comment for return of reloading blocks failure
Co-authored-by: Ayoub Mrini <ayoubmrini424@gmail.com>
Signed-off-by: Ryan Wu <rongjun0821@gmail.com>
* Add the comment for return of reloading blocks failure
Signed-off-by: Ryan Wu <rongjun0821@gmail.com>
---------
Signed-off-by: Ryan Wu <rongjun0821@gmail.com>
Co-authored-by: Ayoub Mrini <ayoubmrini424@gmail.com>
* Remove experimental out-of-order native histogram flag
This feature has been available in Prometheus since September 2024,
and has no known issues. Therefore proposing to remove the flag
entirely and always have it on. Note that there are still two
settings that need to be configured (out-of-order time window > 0
and native histograms enabled) for this feature to work.
Signed-off-by: Fiona Liao <fiona.liao@grafana.com>
* Update CHANGELOG
Signed-off-by: Fiona Liao <fiona.liao@grafana.com>
* Keep feature flag with warning
Signed-off-by: Fiona Liao <fiona.liao@grafana.com>
* Update CHANGELOG
Signed-off-by: Fiona Liao <fiona.liao@grafana.com>
* Update tsdb/head_append.go
Co-authored-by: George Krajcsovits <krajorama@users.noreply.github.com>
Signed-off-by: Fiona Liao <fiona.y.liao@gmail.com>
* Update CHANGELOG.md
Co-authored-by: George Krajcsovits <krajorama@users.noreply.github.com>
Signed-off-by: Fiona Liao <fiona.y.liao@gmail.com>
* Update tsdb/head_append.go
Co-authored-by: George Krajcsovits <krajorama@users.noreply.github.com>
Signed-off-by: Fiona Liao <fiona.y.liao@gmail.com>
* Additional cleanup of comments and test names
Signed-off-by: Fiona Liao <fiona.liao@grafana.com>
---------
Signed-off-by: Fiona Liao <fiona.liao@grafana.com>
Signed-off-by: Fiona Liao <fiona.y.liao@gmail.com>
Co-authored-by: George Krajcsovits <krajorama@users.noreply.github.com>
Compact() is an uppercase function that deals with locks on its own, so we shouldn't have a lock around it.
Signed-off-by: Lukasz Mierzwa <lukasz@cloudflare.com>
We don't hold db.mtx lock when trying to read db.blocks here so we need a read lock around this loop.
Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
This partially reverts ae3d392aa9c3a5c5f92f8116738c5b32c98b09a7.
ae3d392aa9c3a5c5f92f8116738c5b32c98b09a7 added a call to db.mtx.Lock() that lasts for the entire duration of db.reloadBlocks(),
previous db.mtx would be locked only during critical part of db.reloadBlocks().
The motivation was to protect against races:
9e0351e161 (r555699794)
The 'reloads' being mentioned are (I think) reloadBlocks() calls, rather than db.reload() or other methods.
TestTombstoneCleanRetentionLimitsRace was added to catch this but I wasn't able to ever get any error out of it, even after disabling all calls to db.mtx in reloadBlocks() and CleanTombstones().
To make things more complicated CleanupTombstones() itself calls reloadBlocks(), so it seems that the real issue is that we might have concurrent calls to reloadBlocks().
The problem with this change is that db.reloadBlocks() can take a very long time, that's because it might need to load very large blocks from disk, which is slow.
While db.mtx is locked a large chunk of the db is locked, including queries, since db.mtx read lock is needed for db.Querier() call.
One of the issues this manifests itself as is a gap in all metrics and blocked queries just after a large block compaction happens.
When compaction merges multiple day-or-more blocks into a week-or-more block it create a single very big block.
After that block is written it needs to be loaded and that seems to be taking many seconds (30-45), during which mtx is held and everything is blocked.
Turns out that there is another lock that is more fine grained and aimed at this specific use case:
// cmtx ensures that compactions and deletions don't run simultaneously.
cmtx sync.Mutex
All calls to reloadBlocks() are wrapped inside cmtx lock. The only exception is db.reload() which this change fixes.
We can't add cmtx lock inside reloadBlocks() itself because it's called by a number of functions, some of which are already holding cmtx.
Looking at the code I think it is sufficient to hold cmtx and skip a reloadBlocks() wide mtx call.
Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>
Exported the CheckpointPrefix constant to be used in other packages.
Updated references to the constant in db.go and checkpoint.go files.
This change improves code readability and maintainability.
Signed-off-by: johncming <johncming@yahoo.com>
Co-authored-by: johncming <conjohn668@gmail.com>
* Add hidden flag for the delayed compaction random time window
Signed-off-by: Alban HURTAUD <alban.hurtaud@amadeus.com>
* Update cmd/prometheus/main.go
Co-authored-by: Ayoub Mrini <ayoubmrini424@gmail.com>
Signed-off-by: Alban Hurtaud <alban.hurtaud@amadeus.com>
* Update cmd/prometheus/main.go
Co-authored-by: Ayoub Mrini <ayoubmrini424@gmail.com>
Signed-off-by: Alban Hurtaud <alban.hurtaud@amadeus.com>
* Update tsdb/db.go
Co-authored-by: Ayoub Mrini <ayoubmrini424@gmail.com>
Signed-off-by: Alban Hurtaud <alban.hurtaud@amadeus.com>
* Fix flag name according to review - add test for delay
Signed-off-by: Alban HURTAUD <alban.hurtaud@amadeus.com>
* Fix afer main rebase
Signed-off-by: Alban HURTAUD <alban.hurtaud@amadeus.com>
* Implement review comments
Signed-off-by: Alban HURTAUD <alban.hurtaud@amadeus.com>
* Update generatedelaytest to try with limit values
Signed-off-by: Alban HURTAUD <alban.hurtaud@amadeus.com>
---------
Signed-off-by: Alban HURTAUD <alban.hurtaud@amadeus.com>
Signed-off-by: Alban Hurtaud <alban.hurtaud@amadeus.com>
Co-authored-by: Ayoub Mrini <ayoubmrini424@gmail.com>
