Mark Anderson created KAFKA-8182: ------------------------------------ Summary: IllegalStateException in NetworkClient.initiateConnect when handling UnknownHostException thrown from ClusterConnectionStates.connecting Key: KAFKA-8182 URL: https://issues.apache.org/jira/browse/KAFKA-8182 Project: Kafka Issue Type: Bug Components: network Affects Versions: 2.2.0 Reporter: Mark Anderson
When NetworkUtils.initiateConnect calls connectionStates.connecting an UnknownHostException can be thrown by ClientUtils.resolve when creating a new NodeConnectionState . In the above case the nodeState map within ClusterConnectionStates will not contain an entry for the node ID. The catch clause within NetworkUtils.initiateConnect immediately calls connectionStates.disconnected but this makes the assumption that a NodeConnectionState entry exists for the node ID. This assumption is incorrect when an UnknownHostException is thrown as described above and leads to an IllegalStateException like the following: {noformat} java.lang.IllegalStateException: No entry found for connection 2147483645| at org.apache.kafka.clients.ClusterConnectionStates.nodeState(ClusterConnectionStates.java:339)| at org.apache.kafka.clients.ClusterConnectionStates.disconnected(ClusterConnectionStates.java:143)| at org.apache.kafka.clients.NetworkClient.initiateConnect(NetworkClient.java:926)| at org.apache.kafka.clients.NetworkClient.ready(NetworkClient.java:287)|{noformat} -- This message was sent by Atlassian JIRA (v7.6.3#76005)