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fix(blooms): Check length of tasks before accessing first element in slice #14634

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merged 1 commit into from
Oct 29, 2024

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chaudum
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@chaudum chaudum commented Oct 29, 2024

What this PR does / why we need it:

This PR adds a length check for the partitioned series before accessing the first element of the resulting slice.

Which issue(s) this PR fixes:

Fixes #14623

Checklist

  • Reviewed the CONTRIBUTING.md guide (required)
  • Documentation added
  • Tests updated
  • Title matches the required conventional commits format, see here
    • Note that Promtail is considered to be feature complete, and future development for logs collection will be in Grafana Alloy. As such, feat PRs are unlikely to be accepted unless a case can be made for the feature actually being a bug fix to existing behavior.
  • Changes that require user attention or interaction to upgrade are documented in docs/sources/setup/upgrade/_index.md
  • If the change is deprecating or removing a configuration option, update the deprecated-config.yaml and deleted-config.yaml files respectively in the tools/deprecated-config-checker directory. Example PR

@chaudum chaudum requested a review from a team as a code owner October 29, 2024 07:44
// Not sure how this can happen, but there was a bug report
// https://github.com/grafana/loki/issues/14623
if len(seriesByDay) == 0 {
stats.Status = labelSuccess
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I wonder if we should add a log line here with context.

@chaudum chaudum merged commit 601f549 into main Oct 29, 2024
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@chaudum chaudum deleted the chaudum/fix-14623 branch October 29, 2024 08:22
chaudum added a commit that referenced this pull request Nov 6, 2024
…slice (#14634)

This PR adds a length check for the partitioned series before accessing the first element of the resulting slice.

Signed-off-by: Christian Haudum <[email protected]>
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Bloom gateway panic: runtime error: index out of range [0] with length 0 while fetching chunk refs
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