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https://issues.apache.org/jira/browse/FLINK-4809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16259046#comment-16259046
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ASF GitHub Bot commented on FLINK-4809:
---------------------------------------
Github user StefanRRichter commented on a diff in the pull request:
https://github.com/apache/flink/pull/4883#discussion_r151948416
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/ExecutionConfig.java ---
@@ -150,6 +150,9 @@
/** This flag defines if we use compression for the state snapshot data
or not. Default: false */
private boolean useSnapshotCompression = false;
+ /** Determines if a task fails or not if there is an error in writing
its checkpoint data. Default: true */
--- End diff --
After discussions with @aljoscha, we decided to keep this because it is the
current way that Flink forwards the configuration. We add some `@Internal` and
`@Deprecated` annotations to the methods in `ExecutionConfig` so that the user
will use the proper calls on `CheckpointingConfig` instead.
> Operators should tolerate checkpoint failures
> ---------------------------------------------
>
> Key: FLINK-4809
> URL: https://issues.apache.org/jira/browse/FLINK-4809
> Project: Flink
> Issue Type: Sub-task
> Components: State Backends, Checkpointing
> Reporter: Stephan Ewen
> Assignee: Stefan Richter
> Fix For: 1.4.0
>
>
> Operators should try/catch exceptions in the synchronous and asynchronous
> part of the checkpoint and send a {{DeclineCheckpoint}} message as a result.
> The decline message should have the failure cause attached to it.
> The checkpoint barrier should be sent anyways as a first step before
> attempting to make a state checkpoint, to make sure that downstream operators
> do not block in alignment.
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