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[ML] DFA result processor should only skip rows and model chunks on c… #60113

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dimitris-athanasiou
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…ancel

When the job is force-closed or shutting down due to a fatal error we clean
up all cancellable job operations. This includes cancelling the results processor.
However, this means that we might not persist objects that are written from the
process like stats, memory usage, etc.

In hindsight, we do not gain from cancelling the results processor in its
entirety. It makes more sense to skip row results and model chunks but keep
stats and instrumentation about the job as the latter may contain useful information
to understand what happened to the job.

…ancel

When the job is force-closed or shutting down due to a fatal error we clean
up all cancellable job operations. This includes cancelling the results processor.
However, this means that we might not persist objects that are written from the
process like stats, memory usage, etc.

In hindsight, we do not gain from cancelling the results processor in its
entirety. It makes more sense to skip row results and model chunks but keep
stats and instrumentation about the job as the latter may contain useful information
to understand what happened to the job.
@elasticmachine
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Pinging @elastic/ml-core (:ml)

@przemekwitek przemekwitek self-requested a review July 27, 2020 08:29
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LGTM

@dimitris-athanasiou dimitris-athanasiou merged commit 7bc6ba3 into elastic:master Jul 27, 2020
@dimitris-athanasiou dimitris-athanasiou deleted the process-stats-results-when-job-is-cancelled branch July 27, 2020 09:22
dimitris-athanasiou added a commit to dimitris-athanasiou/elasticsearch that referenced this pull request Jul 27, 2020
… on cancel (elastic#60113)

When the job is force-closed or shutting down due to a fatal error we clean
up all cancellable job operations. This includes cancelling the results processor.
However, this means that we might not persist objects that are written from the
process like stats, memory usage, etc.

In hindsight, we do not gain from cancelling the results processor in its
entirety. It makes more sense to skip row results and model chunks but keep
stats and instrumentation about the job as the latter may contain useful information
to understand what happened to the job.

Backport of elastic#60113
dimitris-athanasiou added a commit that referenced this pull request Jul 27, 2020
… on cancel (#60113) (#60193)

When the job is force-closed or shutting down due to a fatal error we clean
up all cancellable job operations. This includes cancelling the results processor.
However, this means that we might not persist objects that are written from the
process like stats, memory usage, etc.

In hindsight, we do not gain from cancelling the results processor in its
entirety. It makes more sense to skip row results and model chunks but keep
stats and instrumentation about the job as the latter may contain useful information
to understand what happened to the job.

Backport of #60113
dimitris-athanasiou added a commit that referenced this pull request Jul 27, 2020
… on cancel (#60113) (#60194)

When the job is force-closed or shutting down due to a fatal error we clean
up all cancellable job operations. This includes cancelling the results processor.
However, this means that we might not persist objects that are written from the
process like stats, memory usage, etc.

In hindsight, we do not gain from cancelling the results processor in its
entirety. It makes more sense to skip row results and model chunks but keep
stats and instrumentation about the job as the latter may contain useful information
to understand what happened to the job.

Backport of #60113
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4 participants