Bill Bejeck created KAFKA-2872:
----------------------------------
Summary: Error starting KafkaStream caused by sink not being
connected to parent source/processor nodes
Key: KAFKA-2872
URL: https://issues.apache.org/jira/browse/KAFKA-2872
Project: Kafka
Issue Type: Bug
Components: kafka streams
Affects Versions: 0.9.0.0
Reporter: Bill Bejeck
Assignee: Bill Bejeck
When starting the KafkaStream I get the following Exception:
Exception in thread "main" java.util.NoSuchElementException: id: SINK
at
org.apache.kafka.streams.processor.internals.QuickUnion.root(QuickUnion.java:40)
at
org.apache.kafka.streams.processor.TopologyBuilder.makeNodeGroups(TopologyBuilder.java:387)
at
org.apache.kafka.streams.processor.TopologyBuilder.topicGroups(TopologyBuilder.java:339)
at
org.apache.kafka.streams.processor.internals.StreamThread.<init>(StreamThread.java:139)
at
org.apache.kafka.streams.processor.internals.StreamThread.<init>(StreamThread.java:120)
at
org.apache.kafka.streams.KafkaStreaming.<init>(KafkaStreaming.java:110)
at bbejeck.ProcessorDriver.main(ProcessorDriver.java:35)
The TopologyBuilder is being built like so:
topologyBuilder.addSource("SOURCE", new StringDeserializer(), new
StringDeserializer(), "src-topic")
.addProcessor("PROCESS", new
GenericProcessorClient(replaceVowels), "SOURCE")
.addSink("SINK", "dest-topic", new StringSerializer(), new
StringSerializer(), "PROCESS");
Looks to me the cause of the error is that in TopologyBuilder.addSink method
the sink is never connected with it's parent.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
