[CURATOR-538] Background exception was not retry-able or retry gave up

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 4.0.1, 4.2.0, 4.3.0, 5.0.0, 5.1.0, 5.2.0, 5.2.1, 5.3.0
• Fix Version/s: 5.4.0
• Component/s: Framework
• Assignee: Zili Chen
• Reporter: imic
• Created: 21/Aug/19 07:26
• Updated: 11/Apr/24 09:11
• Resolved: 11/Apr/24 09:10

Description

 

error log:

//err code is here
2019-08-21 14:24:30.654 0.0.0.0:30901  INFO 45964     --- [e-1-EventThread] org.apache.zookeeper.ClientCnxn          : EventThread shut down for session: 0x10072ab8a8001b12019-08-21 14:24:30.654 0.0.0.0:30901  INFO 45964     --- [e-1-EventThread] org.apache.zookeeper.ClientCnxn          : EventThread shut down for session: 0x10072ab8a8001b12019-08-21 14:24:30.655 0.0.0.0:30901 ERROR 45964     --- [e-1-EventThread] o.a.c.f.imps.CuratorFrameworkImpl        : Background exception was not retry-able or retry gave up
java.lang.NullPointerException: null at org.apache.curator.framework.imps.EnsembleTracker.configToConnectionString(EnsembleTracker.java:179) at org.apache.curator.framework.imps.EnsembleTracker.processConfigData(EnsembleTracker.java:200) at org.apache.curator.framework.imps.EnsembleTracker.access$300(EnsembleTracker.java:50) at org.apache.curator.framework.imps.EnsembleTracker$2.processResult(EnsembleTracker.java:144) at org.apache.curator.framework.imps.CuratorFrameworkImpl.sendToBackgroundCallback(CuratorFrameworkImpl.java:865) at org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:635) at org.apache.curator.framework.imps.WatcherRemovalFacade.processBackgroundOperation(WatcherRemovalFacade.java:152) at org.apache.curator.framework.imps.GetConfigBuilderImpl$2.processResult(GetConfigBuilderImpl.java:222) at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:587) at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:499)
2019-08-21 14:24:30.655 0.0.0.0:30901  INFO 45964     --- [e-1-EventThread] o.a.c.framework.imps.EnsembleTracker     : New config event received: {server.1=zookeeper-0.zk-headless-service.default.svc.cluster.local:2888:3888:participant;0.0.0.0:2181, version=b00000000, server.3=zookeeper-2.zk-headless-service.default.svc.cluster.local:2888:3888:participant;0.0.0.0:2181, server.2=zookeeper-1.zk-headless-service.default.svc.cluster.local:2888:3888:participant;0.0.0.0:2181}2019-08-21 14:24:30.656 0.0.0.0:30901 ERROR 45964     --- [e-1-EventThread] o.a.c.f.imps.CuratorFrameworkImpl        : Background exception was not retry-able or retry gave up
java.lang.NullPointerException: null at org.apache.curator.framework.imps.EnsembleTracker.configToConnectionString(EnsembleTracker.java:179) at org.apache.curator.framework.imps.EnsembleTracker.processConfigData(EnsembleTracker.java:200) at org.apache.curator.framework.imps.EnsembleTracker.access$300(EnsembleTracker.java:50) at org.apache.curator.framework.imps.EnsembleTracker$2.processResult(EnsembleTracker.java:144) at org.apache.curator.framework.imps.CuratorFrameworkImpl.sendToBackgroundCallback(CuratorFrameworkImpl.java:865) at org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:635) at org.apache.curator.framework.imps.WatcherRemovalFacade.processBackgroundOperation(WatcherRemovalFacade.java:152) at org.apache.curator.framework.imps.GetConfigBuilderImpl$2.processResult(GetConfigBuilderImpl.java:222) at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:587) at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:499)

 

    I use kubernates as registor,  envirment is ubuntu18.04 + spring boot 2.x and curator is 4.0.1(spring-cloud-starter-zookeeper-config),  when i debug the project, curator framework throw NullPointerException.

    I debuged it , found EnsembleTracker.java(line 179) server.addr.getAddress() is null! debug info can be found at attachment!

 

QuorumVerifier is 

server.1=zookeeper-0.zk-headless-service.default.svc.cluster.local:2888:3888:participant;0.0.0.0:2181
server.2=zookeeper-1.zk-headless-service.default.svc.cluster.local:2888:3888:participant;0.0.0.0:2181
server.3=zookeeper-2.zk-headless-service.default.svc.cluster.local:2888:3888:participant;0.0.0.0:2181
version=b00000000

 

 

Issue Links

• relates to: CURATOR-649 Background exception was not retry-able or retry gave up