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https://issues.apache.org/jira/browse/FLINK-2664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14743396#comment-14743396
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ASF GitHub Bot commented on FLINK-2664:
---------------------------------------
Github user gyfora commented on a diff in the pull request:
https://github.com/apache/flink/pull/1126#discussion_r39383921
--- Diff:
flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/state/EagerStateStore.java
---
@@ -43,7 +44,7 @@ public EagerStateStore(StateCheckpointer<S, C>
checkpointer, StateHandleProvider
}
@Override
- public S getStateForKey(Serializable key) throws Exception {
+ public S getStateForKey(Serializable key) throws IOException {
--- End diff --
While this is currently not used, once we implement things like out-of-core
state access or lazy state access this will probably become necessary.
> Remove partitioned states when set to null
> ------------------------------------------
>
> Key: FLINK-2664
> URL: https://issues.apache.org/jira/browse/FLINK-2664
> Project: Flink
> Issue Type: Improvement
> Components: Streaming
> Reporter: Gyula Fora
> Assignee: Gyula Fora
>
> Currently there is no way to remove a specific key from the partitioned state
> stored at streaming operators, which can cause unnecessary state accumulation.
> I suggest to remove the partitioned state for the current input when the
> state is set to null, and upon next retrieval simply return the default
> value. This allows the implementation of streaming programs that can garbage
> collect their own unwanted state.
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