Don't free buffers after reading query stream #9721
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Follow up on #9401 While the write path has been carefully crafted to make sure that we don't keep references to the strings backed by arrays with data from grpc stream (because it would cause a memory leak), this doesn't seem to be the case in the query path, where some tests started failing after we started to reuse those backing arrays through the usage of memory buffers implemented in the new gRPC library. This change reverts the buffer freeing, means that it won't be recycled (and will be garbage collected) to ensure data correctness, while we investigate where the data references are kept. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
|
There was no changelog entry in #9401 so nothing to update here. |
bboreham
approved these changes
Oct 23, 2024
|
It's also concerning that only those tests failed 😱 |
4 tasks
duricanikolic
added a commit
that referenced
this pull request
Nov 1, 2024
This reverts commit f7b6017.
duricanikolic
added a commit
that referenced
this pull request
Nov 4, 2024
This reverts commit f7b6017.
This was referenced Nov 4, 2024
duricanikolic
added a commit
that referenced
this pull request
Nov 4, 2024
* Revert "Don't free buffers after reading query stream (#9721)" This reverts commit f7b6017. * Revert: Upgrade to google.golang.org/grpc v1.66.2 / modify certain protobuf messages to retain their unmarshaling buffer (#9401) Signed-off-by: Yuri Nikolic <durica.nikolic@grafana.com> * Revert "Distributor.queryIngesterStream: Free gRPC buffers upon error (#9756)" This reverts commit eda1a4b. --------- Signed-off-by: Yuri Nikolic <durica.nikolic@grafana.com>
aknuds1
added a commit
that referenced
this pull request
Nov 4, 2024
* [release-2.14] fix(deps): update github.com/thanos-io/objstore digest to f90c89a (main) (#9625) * Update github.com/thanos-io/objstore digest to f90c89a (#9534) Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com> Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> (cherry picked from commit 3c97a61) * update changelog Signed-off-by: Vladimir Varankin <vladimir.varankin@grafana.com> --------- Signed-off-by: Vladimir Varankin <vladimir.varankin@grafana.com> Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: Vladimir Varankin <vladimir.varankin@grafana.com> * 2.14.1 Prepare patch release (#9796) * bump patch version Signed-off-by: Vladimir Varankin <vladimir.varankin@grafana.com> * rebuild assets Signed-off-by: Vladimir Varankin <vladimir.varankin@grafana.com> --------- Signed-off-by: Vladimir Varankin <vladimir.varankin@grafana.com> * MQE: Fix handling of string results (#9803) This would previously panic after the query was closed * chore(deps): update grafana/mimirtool docker tag to v2.14.1 (#9806) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> * Revert upgrade to google.golang.org/grpc v1.66.2 (#9811) * Revert "Don't free buffers after reading query stream (#9721)" This reverts commit f7b6017. * Revert: Upgrade to google.golang.org/grpc v1.66.2 / modify certain protobuf messages to retain their unmarshaling buffer (#9401) Signed-off-by: Yuri Nikolic <durica.nikolic@grafana.com> * Revert "Distributor.queryIngesterStream: Free gRPC buffers upon error (#9756)" This reverts commit eda1a4b. --------- Signed-off-by: Yuri Nikolic <durica.nikolic@grafana.com> * Improve lock contention affecting read and write latencies during TSDB head compaction (cherry-pick Prometheus PR 15242) (#9822) * Cherry-pick Prometheus PR 15242 Signed-off-by: Marco Pracucci <marco@pracucci.com> * Added CHANGELOG entry Signed-off-by: Marco Pracucci <marco@pracucci.com> * Updated CHANGELOG Signed-off-by: Marco Pracucci <marco@pracucci.com> --------- Signed-off-by: Marco Pracucci <marco@pracucci.com> --------- Signed-off-by: Vladimir Varankin <vladimir.varankin@grafana.com> Signed-off-by: Yuri Nikolic <durica.nikolic@grafana.com> Signed-off-by: Marco Pracucci <marco@pracucci.com> Co-authored-by: Grot (@grafanabot) <43478413+grafanabot@users.noreply.github.com> Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com> Co-authored-by: Vladimir Varankin <vladimir.varankin@grafana.com> Co-authored-by: Joshua Hesketh <joshua.hesketh@grafana.com> Co-authored-by: Đurica Yuri Nikolić <durica.nikolic@grafana.com> Co-authored-by: Marco Pracucci <marco@pracucci.com>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
What this PR does
While the write path has been carefully crafted to make sure that we don't keep references to the strings backed by arrays with data from grpc stream (because it would cause a memory leak), this doesn't seem to be the case in the query path, where some tests started failing after we started to reuse those backing arrays through the usage of memory buffers implemented in the new gRPC library.
This change reverts the buffer freeing, means that it won't be recycled (and will be garbage collected) to ensure data correctness, while we investigate where the data references are kept.
Which issue(s) this PR fixes or relates to
Follow up on #9401
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX].about-versioning.mdupdated with experimental features.