[KAFKA-3589] KTable.count(final KeyValueMapper<K, V, K1> selector, String name) throw NPE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.10.0.0
• Fix Version/s: 0.10.0.0
• Component/s: streams
• Labels: architecture
• Assignee: Guozhang Wang
• Reporter: Damian Guy
• Created: 20/Apr/16 06:53
• Updated: 21/Apr/16 21:54
• Resolved: 21/Apr/16 21:51

Description

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());