Caroline Liu created KAFKA-8508: ----------------------------------- Summary: saslClient failed to initialize properly: it's null. Key: KAFKA-8508 URL: https://issues.apache.org/jira/browse/KAFKA-8508 Project: Kafka Issue Type: Bug Components: zkclient Affects Versions: 2.0.1 Reporter: Caroline Liu
After a network issue caused the last ISR to fail connecting to ZooKeeper, the attempt to reconnect failed with an ArrayIndexOutOfBoundsException. {code:java} 2019-05-31 15:54:38,823 [zk-session-expiry-handler0-SendThread(zk2-1:2181)] WARN (org.apache.zookeeper.ClientCnxn) - Client session timed out, have not heard from server in 20010ms for sessionid 0x15000011b2b1042a 2019-05-31 15:54:38,823 [zk-session-expiry-handler0-SendThread(zk2-1:2181)] INFO (org.apache.zookeeper.ClientCnxn) - Client session timed out, have not heard from server in 20010ms for sessionid 0x15000011b2b1042a, closing socket connection and attempting reconnect 2019-05-31 15:54:39,702 [zk-session-expiry-handler0-SendThread(zk1-2:2181)] INFO (org.apache.zookeeper.client.ZooKeeperSaslClient) - Client will use DIGEST-MD5 as SASL mechanism. 2019-05-31 15:54:39,702 [zk-session-expiry-handler0-SendThread(zk1-2:2181)] ERROR (org.apache.zookeeper.client.ZooKeeperSaslClient) - Exception while trying to create SASL client: java.lang.ArrayIndexOutOfBoundsException: 0 2019-05-31 15:54:39,702 [zk-session-expiry-handler0-SendThread(zk1-2:2181)] INFO (org.apache.zookeeper.ClientCnxn) - Opening socket connection to server zk1-2/1.3.6.1:2181. Will attempt to SASL-authenticate using Login Context section 'Client' 2019-05-31 15:54:39,702 [zk-session-expiry-handler0-SendThread(zk1-2:2181)] INFO (org.apache.zookeeper.ClientCnxn) - Socket connection established to zk1-2/1.3.6.1:2181, initiating session 2019-05-31 15:54:39,703 [zk-session-expiry-handler0-SendThread(zk1-2:2181)] INFO (org.apache.zookeeper.ClientCnxn) - Session establishment complete on server zk1-2/1.3.6.1:2181, sessionid = 0x15000011b2b1042a, negotiated timeout = 30000 2019-05-31 15:54:39,703 [zk-session-expiry-handler0-SendThread(zk1-2:2181)] ERROR (org.apache.zookeeper.ClientCnxn) - SASL authentication with Zookeeper Quorum member failed: javax.security.sasl.SaslException: saslClient failed to initialize properly: it's null.{code} Kafka was "not live" in zookeeper and had to be manually restarted to recover from this error. It would be better if the last ISR could retry. -- This message was sent by Atlassian JIRA (v7.6.3#76005)