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https://issues.apache.org/jira/browse/FLINK-2609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15208344#comment-15208344
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ASF GitHub Bot commented on FLINK-2609:
---------------------------------------
Github user rmetzger commented on a diff in the pull request:
https://github.com/apache/flink/pull/1833#discussion_r57151588
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/CoGroupedStreams.java
---
@@ -94,6 +95,7 @@ public CoGroupedStreams(DataStream<T1> input1,
DataStream<T2> input2) {
*/
public <KEY> Where<KEY> where(KeySelector<T1, KEY> keySelector) {
TypeInformation<KEY> keyType =
TypeExtractor.getKeySelectorTypes(keySelector, input1.getType());
+ Serializers.recursivelyRegisterType(keyType,
input1.getExecutionEnvironment().getConfig(), DataStream.deduplicator);
--- End diff --
Why is there no check for the auto type registration?
> Automatic type registration is only called from the batch execution
> environment
> -------------------------------------------------------------------------------
>
> Key: FLINK-2609
> URL: https://issues.apache.org/jira/browse/FLINK-2609
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 0.10.0
> Reporter: Robert Metzger
> Assignee: Chesnay Schepler
>
> Kryo types in the streaming API are quite expensive to serialize because they
> are not automatically registered at Kryo.
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