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https://issues.apache.org/jira/browse/FLINK-7213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16101484#comment-16101484
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ASF GitHub Bot commented on FLINK-7213:
---------------------------------------
Github user StefanRRichter commented on a diff in the pull request:
https://github.com/apache/flink/pull/4353#discussion_r129532719
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/AbstractStreamOperator.java
---
@@ -208,13 +208,13 @@ public MetricGroup getMetricGroup() {
}
@Override
- public final void initializeState(OperatorStateHandles stateHandles)
throws Exception {
+ public final void initializeState(OperatorSubtaskState stateHandles)
throws Exception {
Collection<KeyedStateHandle> keyedStateHandlesRaw = null;
Collection<OperatorStateHandle> operatorStateHandlesRaw = null;
Collection<OperatorStateHandle> operatorStateHandlesBackend =
null;
- boolean restoring = null != stateHandles;
+ boolean restoring = (null != stateHandles);
--- End diff --
I like to do this when generating a boolean out of a `!=` or `==`
comparison because I find this easier to read in the presence of more than one
`=` character.
> Introduce state management by OperatorID in TaskManager
> -------------------------------------------------------
>
> Key: FLINK-7213
> URL: https://issues.apache.org/jira/browse/FLINK-7213
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing
> Affects Versions: 1.4.0
> Reporter: Stefan Richter
> Assignee: Stefan Richter
>
> Flink-5892 introduced the job manager / checkpoint coordinator part of
> managing state on the operator level instead of the task level by introducing
> explicit operator_id -> state mappings. However, this explicit mapping was
> not introduced in the task manager side, so the explicit mapping is still
> converted into a mapping that suits the implicit operator chain order.
> We should also introduce explicit operator ids to state management on the
> task manager.
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