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Subject [GitHub] [flink] markcho opened a new pull request #12618: [FLINK-18263] [WIP] Extend Flink CheckpointRetentionPolicy to optionally retain checkpoints even when the job is successfully finished.
Date Thu, 11 Jun 2020 20:05:17 GMT

markcho opened a new pull request #12618:
URL: https://github.com/apache/flink/pull/12618

   [FLINK-18263] [WIP] Extend Flink CheckpointRetentionPolicy to optionally retain checkpoints
even when the job is successfully finished.
   Work in progress PR to reference from https://jira.apache.org/jira/browse/FLINK-18263
   *Thank you very much for contributing to Apache Flink - we are happy that you want to help
us improve Flink. To help the community review your contribution in the best possible way,
please go through the checklist below, which will get the contribution into a shape in which
it can be best reviewed.*
   *Please understand that we do not do this to make contributions to Flink a hassle. In order
to uphold a high standard of quality for code contributions, while at the same time managing
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give reviewers enough contextual information for the review. Please also understand that contributions
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lower priority by the community.*
   ## Contribution Checklist
     - Make sure that the pull request corresponds to a [JIRA issue](https://issues.apache.org/jira/projects/FLINK/issues).
Exceptions are made for typos in JavaDoc or documentation files, which need no JIRA issue.
     - Name the pull request in the form "[FLINK-XXXX] [component] Title of the pull request",
where *FLINK-XXXX* should be replaced by the actual issue number. Skip *component* if you
are unsure about which is the best component.
     Typo fixes that have no associated JIRA issue should be named following this pattern:
`[hotfix] [docs] Fix typo in event time introduction` or `[hotfix] [javadocs] Expand JavaDoc
for PuncuatedWatermarkGenerator`.
     - Fill out the template below to describe the changes contributed by the pull request.
That will give reviewers the context they need to do the review.
     - Make sure that the change passes the automated tests, i.e., `mvn clean verify` passes.
You can set up Azure Pipelines CI to do that following [this guide](https://cwiki.apache.org/confluence/display/FLINK/Azure+Pipelines#AzurePipelines-Tutorial:SettingupAzurePipelinesforaforkoftheFlinkrepository).
     - Each pull request should address only one issue, not mix up code from multiple issues.
     - Each commit in the pull request has a meaningful commit message (including the JIRA
     - Once all items of the checklist are addressed, remove the above text and this checklist,
leaving only the filled out template below.
   **(The sections below can be removed for hotfixes of typos)**
   ## What is the purpose of the change
   WIP PR for https://jira.apache.org/jira/browse/FLINK-18263. More changes will be made to
the PR if we do decide to extend the externalized checkpoint retention configuration.
   More context is available in the Jira ticket. This PR extends `execution.checkpointing.externalized-checkpoint-retention`
configuration to allow users to configure externalized checkpoint retention for jobs in all
terminal state, including FINISHED state.
   ## Brief change log
   - Refactored `ExternalizedCheckpointCleanup` enum to include a third option to `RETAIN_ON_SUCCESS`.
   ## Verifying this change
   - Did a quick verification against our prod jobs. Additional verifications will be needed
after making additional changes to the PR. 
   ## Does this pull request potentially affect one of the following parts:
     - Dependencies (does it add or upgrade a dependency): no
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no
     - The serializers: no
     - The runtime per-record code paths (performance sensitive): no
     - Anything that affects deployment or recovery: JobManager no
     - The S3 file system connector: no
   ## Documentation
     - Does this pull request introduce a new feature? no

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