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https://issues.apache.org/jira/browse/FLINK-8802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16398255#comment-16398255
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ASF GitHub Bot commented on FLINK-8802:
---------------------------------------
Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/5691#discussion_r174379723
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/state/internal/InternalMergingState.java
---
@@ -26,12 +26,14 @@
* The peer to the {@link MergingState} in the internal state type
hierarchy.
*
* See {@link InternalKvState} for a description of the internal state
hierarchy.
- *
- * @param <N> The type of the namespace
- * @param <IN> The type of elements added to the state
- * @param <OUT> The type of elements
+ *
+ * @param <K> The type of key the state is associated to
+ * @param <N> The type of the namespace
+ * @param <IN> The type of elements added to the state
+ * @param <SV> The type of elements in the state
+ * @param <OUT> The type of elements
--- End diff --
indentation is off and the description deserves an extension
> Concurrent serialization without duplicating serializers in state server.
> -------------------------------------------------------------------------
>
> Key: FLINK-8802
> URL: https://issues.apache.org/jira/browse/FLINK-8802
> Project: Flink
> Issue Type: Bug
> Components: Queryable State
> Affects Versions: 1.5.0
> Reporter: Kostas Kloudas
> Assignee: Kostas Kloudas
> Priority: Blocker
> Fix For: 1.5.0
>
>
> The `getSerializedValue()` may be called by multiple threads but serializers
> are not duplicated, which may lead to exceptions thrown when a serializer is
> stateful.
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