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Posted to issues@flink.apache.org by "Congxian Qiu(klion26) (Jira)" <ji...@apache.org> on 2020/08/09 07:19:00 UTC
[jira] [Commented] (FLINK-14942) State Processing API: add an
option to make deep copy
[ https://issues.apache.org/jira/browse/FLINK-14942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17173767#comment-17173767 ]
Congxian Qiu(klion26) commented on FLINK-14942:
-----------------------------------------------
After savepoint relocatable, I think we need to make a deep copy default for StateProcessing API now. because we assume that all the data and metadata are in the same directory.
> State Processing API: add an option to make deep copy
> -----------------------------------------------------
>
> Key: FLINK-14942
> URL: https://issues.apache.org/jira/browse/FLINK-14942
> Project: Flink
> Issue Type: Improvement
> Components: API / State Processor
> Reporter: Jun Qin
> Assignee: Jun Qin
> Priority: Major
> Labels: usability
> Fix For: 1.12.0
>
>
> Current when a new savepoint is created based on a source savepoint, then there are references in the new savepoint to the source savepoint. Here is the [State Processing API doc|https://ci.apache.org/projects/flink/flink-docs-release-1.9/dev/libs/state_processor_api.html] says:
> bq. Note: When basing a new savepoint on existing state, the state processor api makes a shallow copy of the pointers to the existing operators. This means that both savepoints share state and one cannot be deleted without corrupting the other!
> This JIRA is to request an option to have a deep copy (instead of shallow copy) such that the new savepoint is self-contained.
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