Store-gateway: allow postings scans to be interrupted #8154
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If the filter operation is expensive, e.g. a large regexp, and the posting has a lot of values, filtering can many seconds. Check the context for cancellation every 1024 values. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
krajorama
reviewed
May 16, 2024
| for d.Err() == nil && !currEntry.isLast { | ||
| if count%checkContextEveryNIterations == 0 && ctx.Err() != nil { | ||
| return nil, ctx.Err() |
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can we wrap the error so we have a bit more details? Also using context.Cause instead of ctx.Err() would give even more details
…ancel Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
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May 16, 2024
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LGTM with some minor comments. It'd be nice to implement @dimitarvdimitrov 's
suggestions but I understand this is urgent-ish.
Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
francoposa
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May 27, 2024
* Store-gateway: allow postings scans to be interrupted If the filter operation is expensive, e.g. a large regexp, and the posting has a lot of values, filtering can many seconds. Check the context for cancellation every 1024 values. Signed-off-by: Bryan Boreham <bjboreham@gmail.com> Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Co-authored-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Co-authored-by: George Krajcsovits <krajorama@users.noreply.github.com>
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What this PR does
If the filter operation is expensive, e.g. a large regexp, and the posting has a lot of values, filtering can many seconds. Check the context for cancellation every 1024 values.
Which issue(s) this PR fixes or relates to
Same issue as grafana/mimir-prometheus#633, but store-gateway does its own index scans.
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX].about-versioning.mdupdated with experimental features.