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Posted to dev@kafka.apache.org by "Damian Guy (JIRA)" <ji...@apache.org> on 2016/04/20 08:54:25 UTC
[jira] [Created] (KAFKA-3589) KTable.count(final KeyValueMapper selector, String name) throw NPE
Damian Guy created KAFKA-3589:
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Summary: KTable.count(final KeyValueMapper<K, V, K1> selector, String name) throw NPE
Key: KAFKA-3589
URL: https://issues.apache.org/jira/browse/KAFKA-3589
Project: Kafka
Issue Type: Bug
Components: streams
Affects Versions: 0.10.0.0
Reporter: Damian Guy
Assignee: Guozhang Wang
The implementation of KTable.count(inal KeyValueMapper<K, V, K1> selector, String name) passes null through as the parameters for the key and value serdes. This results in an NPE in the aggregate method when it does:
ChangedSerializer<V1> changedValueSerializer = new ChangedSerializer<>(valueSerde.serializer());
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