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https://issues.apache.org/jira/browse/FLINK-2007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14556400#comment-14556400
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ASF GitHub Bot commented on FLINK-2007:
---------------------------------------
Github user rmetzger commented on a diff in the pull request:
https://github.com/apache/flink/pull/697#discussion_r30910025
--- Diff:
flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/windowing/policy/DeltaPolicy.java
---
@@ -131,4 +145,29 @@ public boolean equals(Object other) {
public String toString() {
return "DeltaPolicy(" + threshold + ", " +
deltaFuntion.getClass().getSimpleName() + ")";
}
+
+ private void writeObject(ObjectOutputStream stream) throws IOException{
+ stream.writeObject(deltaFuntion);
+ stream.writeObject(windowBuffer);
+ stream.writeDouble(threshold);
--- End diff --
as Gyula said, you can use defaultWriteObject here
> Initial data point in Delta function needs to be serializable
> -------------------------------------------------------------
>
> Key: FLINK-2007
> URL: https://issues.apache.org/jira/browse/FLINK-2007
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 0.9
> Reporter: Márton Balassi
> Assignee: Márton Balassi
> Labels: serialization, windowing
> Fix For: 0.9
>
>
> Currently we expect the data point passed to the delta function to be
> serializable, which breaks the serialization assumptions provided in other
> parts of the code.
> This information should be properly serialized by Flink serializers instead.
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