[8.x] OsStats must be lenient with bad data from older nodes#73610
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williamrandolph merged 4 commits intoelastic:masterfrom Jun 1, 2021
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[8.x] OsStats must be lenient with bad data from older nodes#73610williamrandolph merged 4 commits intoelastic:masterfrom
williamrandolph merged 4 commits intoelastic:masterfrom
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Pinging @elastic/es-core-infra (Team:Core/Infra) |
This was referenced Jun 1, 2021
rjernst
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The approach seems good to me, but can you please link the relevant PRs?
| assert this.free >= 0 : "expected free swap to be positive, got: " + total; | ||
| } else { | ||
| // If we have a node in the cluster without the bug fix for | ||
| // negative memory values, we need to coerce negative values to 0 here. |
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It would be good to have a link here to the relevant PR that added coercion, so a reader can verify the 7.8 boundary.
| assert free >= 0 : "expected free memory to be positive, got: " + total; | ||
| } else { | ||
| // If we have a node in the cluster without the bug fix for | ||
| // negative memory values, we need to coerce negative values to 0 here. |
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It would be good to have a link here to the relevant PR that added coercion, so a reader can verify the 7.2 boundary.
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@elasticmachine run elasticsearch-ci/bwc (the error was a timeout on an unrelated test) |
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We've had a series of bug fixes for cases where an
OsProbegives negative values, most often just-1, to theOsStatsclass. We added assertions to catch cases where we were initializingOsStatswith bad values. Unfortunately, these fixes turned to not be backwards-compatible. In this commit, we simply coerce bad values to 0 when data is coming from nodes that don't have the relevant bug fixes.Relevant PRs:
Fixes #73459