IngestionJob is being gracefully replaced to minimize downtime #828
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/retest |
woop
approved these changes
Jun 25, 2020
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: pyalex, woop The full list of commands accepted by this bot can be found here. The pull request process is described here
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/lgtm |
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/kind housekeeping |
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/retest |
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/test test-end-to-end-batch |
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What this PR does / why we need it:
Previously, when job required upgrade (currently happens when store config changed) - we stopped current running job and then spawn new one sequentially. That may bring downtime in Ingestion, which is unwanted, especially for online storing.
In this PR we spawn clone of the job first. The old one being garbage collected (terminated) on the next run of JobCoordintatorService.Poll when we are sure that replacement is up & running.
Which issue(s) this PR fixes:
Fixes #
Does this PR introduce a user-facing change?: