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https://issues.apache.org/jira/browse/CURATOR-597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zili Chen closed CURATOR-597.
-----------------------------
    Fix Version/s: 5.4.0
         Assignee: Zili Chen
       Resolution: Fixed

master via b66240c80e8f289b701ecccc1febfd2f7a3f6aac

> Background exception was not retry-able or retry gave up
> --------------------------------------------------------
>
>                 Key: CURATOR-597
>                 URL: https://issues.apache.org/jira/browse/CURATOR-597
>             Project: Apache Curator
>          Issue Type: Bug
>          Components: Framework
>    Affects Versions: 5.1.0
>         Environment: curator-framework 5.1.0 where Zoo Servers 3.6.3 are 
> running in a docker container with CentOS Linux release 7.9.2009 (Core)
>            Reporter: Stan Henderson
>            Assignee: Zili Chen
>            Priority: Major
>             Fix For: 5.4.0
>
>
> I see a similar issue as https://issues.apache.org/jira/browse/CURATOR-538 
> with curator-framework 5.1.0 where Zoo Servers are running in a docker 
> container with CentOS Linux release 7.9.2009 (Core)
> In the tests I'm running, it does not appear to occur all of the time and 
> does not appear to cause anything to fail.
> server.1=9.48.164.32:2888:3888:participant;0.0.0.0:2181
> server.2=9.48.164.34:2888:3888:participant;0.0.0.0:2181
> server.3=9.48.164.35:2888:3888:participant;0.0.0.0:2181
> server.4=9.48.164.39:2888:3888:observer;0.0.0.0:2181
> server.5=9.48.164.40:2888:3888:observer;0.0.0.0:2181
> server.6=9.48.164.42:2888:3888:observer;0.0.0.0:218
> Compatibility.java:116: return (address != null) ? 
> address.getAddress().getHostAddress() : "unknown";
> 14:56:26.943 [main-EventThread] ERROR 
> org.apache.curator.framework.imps.CuratorFrameworkImpl - Background exception 
> was not retry-able or retry gave up
> java.lang.NullPointerException: null
> at 
> org.apache.curator.utils.Compatibility.getHostAddress(Compatibility.java:116) 
> ~[curator-client-5.1.0.jar:?]
> at 
> org.apache.curator.framework.imps.EnsembleTracker.configToConnectionString(EnsembleTracker.java:185)
>  ~[curator-framework-5.1.0.jar:5.1.0]
> at 
> org.apache.curator.framework.imps.EnsembleTracker.processConfigData(EnsembleTracker.java:206)
>  ~[curator-framework-5.1.0.jar:5.1.0]
> at 
> org.apache.curator.framework.imps.EnsembleTracker.access$300(EnsembleTracker.java:50)
>  ~[curator-framework-5.1.0.jar:5.1.0]
> at 
> org.apache.curator.framework.imps.EnsembleTracker$2.processResult(EnsembleTracker.java:150)
>  ~[curator-framework-5.1.0.jar:5.1.0]
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.sendToBackgroundCallback(CuratorFrameworkImpl.java:892)
>  [curator-framework-5.1.0.jar:5.1.0]
> at 
> org.apache.curator.framework.imps.CuratorFrameworkImpl.processBackgroundOperation(CuratorFrameworkImpl.java:649)
>  [curator-framework-5.1.0.jar:5.1.0]
> at 
> org.apache.curator.framework.imps.WatcherRemovalFacade.processBackgroundOperation(WatcherRemovalFacade.java:152)
>  [curator-framework-5.1.0.jar:5.1.0]
> at 
> org.apache.curator.framework.imps.GetConfigBuilderImpl$2.processResult(GetConfigBuilderImpl.java:222)
>  [curator-framework-5.1.0.jar:5.1.0]
> at 
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:644) 
> [zookeeper-3.6.3.jar:3.6.3]
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:563) 
> [zookeeper-3.6.3.jar:3.6.3]
> I'm using ExponentialBackoffRetry(5000, 29, 60 * 1000 * 2) for the 
> CuratorFrameworkFactory retry policy.
> /**
> @param baseSleepTimeMs initial amount of time to wait between retries
> @param maxRetries max number of times to retry
> @param maxSleepMs max time in ms to sleep on each retry
> */
> public ExponentialBackoffRetry(int baseSleepTimeMs, int maxRetries, int 
> maxSleepMs)



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