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Harden field-caps request dispatcher #108736

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merged 9 commits into from
May 20, 2024
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@dnhatn dnhatn commented May 16, 2024

ExceptionHelper#useAndSuppress can throw exceptions if both input exceptions having the same root cause. If this happens, the field-caps request dispatcher might fail to notify the completion to the caller. I found this while running ES|QL with disruptions.

Relates #107347

@dnhatn dnhatn force-pushed the harden-field-caps branch from 30d6703 to c0a6e59 Compare May 16, 2024 18:16
@dnhatn dnhatn added :Search/Search Search-related issues that do not fall into other categories >non-issue v8.14.1 labels May 16, 2024
@dnhatn dnhatn requested a review from original-brownbear May 16, 2024 19:16
@dnhatn dnhatn marked this pull request as ready for review May 16, 2024 19:16
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Pinging @elastic/es-search (Team:Search)

@elasticsearchmachine elasticsearchmachine added the Team:Search Meta label for search team label May 16, 2024
@dnhatn dnhatn added >bug and removed >non-issue labels May 16, 2024
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Hi @dnhatn, I've created a changelog YAML for you.

@dnhatn dnhatn requested a review from nik9000 May 17, 2024 15:47
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Makes sense. And you can group the same exceptions together.

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I'm a little hesitant to let exceptions bubble up after we resolve the completion callback, see my inline comment. WDYT? This seems like it will make reasoning about where what exception is handled very complicated?

assert removed != null;
onIndexFailure.accept(failedIndex, e);
}
} finally {
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Wouldn't it make more sense to quietly record the individual index failure (so essentially catch/suppress inside the loop) instead of propagating a somewhat expected exception further?

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@dnhatn dnhatn May 17, 2024

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++, I pushed 1899f36 and 63e72d9

@dnhatn dnhatn requested a review from original-brownbear May 17, 2024 16:19
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dnhatn commented May 20, 2024

@nik9000 @original-brownbear Thanks for reviewing.

@dnhatn dnhatn merged commit 05a2046 into elastic:main May 20, 2024
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@dnhatn dnhatn deleted the harden-field-caps branch May 20, 2024 17:58
dnhatn added a commit to dnhatn/elasticsearch that referenced this pull request May 20, 2024
ExceptionHelper#useAndSuppress can throw exceptions if both input 
exceptions having the same root cause. If this happens, the field-caps
request dispatcher might fail to notify the completion to the caller. I
found this while running ES|QL with disruptions.

Relates elastic#107347
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💚 Backport successful

Status Branch Result
8.14

elasticsearchmachine pushed a commit that referenced this pull request May 20, 2024
ExceptionHelper#useAndSuppress can throw exceptions if both input 
exceptions having the same root cause. If this happens, the field-caps
request dispatcher might fail to notify the completion to the caller. I
found this while running ES|QL with disruptions.

Relates #107347
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4 participants