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Posted to issues@beam.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/09/02 15:47:00 UTC
[jira] [Work logged] (BEAM-5428) Implement cross-bundle state
caching.
[ https://issues.apache.org/jira/browse/BEAM-5428?focusedWorklogId=305250&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-305250 ]
ASF GitHub Bot logged work on BEAM-5428:
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Author: ASF GitHub Bot
Created on: 02/Sep/19 15:46
Start Date: 02/Sep/19 15:46
Worklog Time Spent: 10m
Work Description: mxm commented on issue #9374: [BEAM-5428] Implement Runner support for cache tokens
URL: https://github.com/apache/beam/pull/9374#issuecomment-527189955
>How do you imagine cache invalidation would happen (I'm asking because I wonder whether we should be exposing invalidateCacheToken APIs as part of the shared runner fn-execution code)?
In my mind, the Runner simply redeploys the operator in case of a failure and that discards all its ephemeral state (e.g. cache tokens). Only state persisted in the Runner's state backend will be restored after a failure. I know this model works for Flink and Spark. If such a model works for all Runners, then we could indeed remove the `invalidateCacheToken()` method from the user state handler.
So I'll remove the invalidation logic from `BagUserStateHandler`. Are you also suggesting, we should remove it from `StateRequestHandler` as well? Then nothing would be exposed in fn-execution. All the invalidation logic would be inside the state handler implementations.
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Issue Time Tracking
-------------------
Worklog Id: (was: 305250)
Time Spent: 12h 50m (was: 12h 40m)
> Implement cross-bundle state caching.
> -------------------------------------
>
> Key: BEAM-5428
> URL: https://issues.apache.org/jira/browse/BEAM-5428
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-harness
> Reporter: Robert Bradshaw
> Assignee: Rakesh Kumar
> Priority: Major
> Time Spent: 12h 50m
> Remaining Estimate: 0h
>
> Tech spec: [https://docs.google.com/document/d/1BOozW0bzBuz4oHJEuZNDOHdzaV5Y56ix58Ozrqm2jFg/edit#heading=h.7ghoih5aig5m]
> Relevant document: [https://docs.google.com/document/d/1ltVqIW0XxUXI6grp17TgeyIybk3-nDF8a0-Nqw-s9mY/edit#|https://docs.google.com/document/d/1ltVqIW0XxUXI6grp17TgeyIybk3-nDF8a0-Nqw-s9mY/edit]
> Mailing list link: [https://lists.apache.org/thread.html/caa8d9bc6ca871d13de2c5e6ba07fdc76f85d26497d95d90893aa1f6@%3Cdev.beam.apache.org%3E]
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