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https://issues.apache.org/jira/browse/FLINK-4844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15582779#comment-15582779
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ASF GitHub Bot commented on FLINK-4844:
---------------------------------------
Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/2648#discussion_r83666257
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/state/OperatorStateStore.java
---
@@ -18,14 +18,18 @@
package org.apache.flink.api.common.state;
+import org.apache.flink.annotation.PublicEvolving;
+
import java.io.Serializable;
import java.util.Set;
/**
- * Interface for a backend that manages operator state.
+ * This interface contains methods for registering operator state with a
managed store.
*/
+@PublicEvolving
public interface OperatorStateStore {
+ /** The default namespace for state in cases where no state name is
provided */
String DEFAULT_OPERATOR_STATE_NAME = "_default_";
--- End diff --
This is an implementation detail that should not be exposed on this
interface.
> Partitionable Raw Keyed/Operator State
> --------------------------------------
>
> Key: FLINK-4844
> URL: https://issues.apache.org/jira/browse/FLINK-4844
> Project: Flink
> Issue Type: New Feature
> Reporter: Stefan Richter
> Assignee: Stefan Richter
>
> Partitionable operator and keyed state are currently only available by using
> backends. However, the serialization code for many operators is build around
> reading/writing their state to a stream for checkpointing. We want to provide
> partitionable states also through streams, so that migrating existing
> operators becomes more easy.
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