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https://issues.apache.org/jira/browse/ZOOKEEPER-2184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15826190#comment-15826190
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ASF GitHub Bot commented on ZOOKEEPER-2184:
-------------------------------------------

Github user fpj commented on a diff in the pull request:

    https://github.com/apache/zookeeper/pull/150#discussion_r96431605
  
    --- Diff: src/java/main/org/apache/zookeeper/client/StaticHostProvider.java 
---
    @@ -87,12 +73,69 @@ public StaticHostProvider(Collection<InetSocketAddress> 
serverAddresses)
             Collections.shuffle(this.serverAddresses);
         }
     
    +    /**
    +     * In Java 7, we have a method getHostString, but earlier versions do 
not support it.
    +     * This method is to provide a replacement for 
InetSocketAddress.getHostString().
    +     *
    +     * It evaluates to a hostname if one is available and otherwise it 
returns the
    --- End diff --
    
    I've added a phrase to the return tag.


> Zookeeper Client should re-resolve hosts when connection attempts fail
> ----------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-2184
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2184
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: java client
>    Affects Versions: 3.4.6, 3.5.0
>         Environment: Ubuntu 14.04 host, Docker containers for Zookeeper & 
> Kafka
>            Reporter: Robert P. Thille
>            Assignee: Flavio Junqueira
>              Labels: easyfix, patch
>             Fix For: 3.4.10, 3.5.3
>
>         Attachments: ZOOKEEPER-2184.patch
>
>
> Testing in a Docker environment with a single Kafka instance using a single 
> Zookeeper instance. Restarting the Zookeeper container will cause it to 
> receive a new IP address. Kafka will never be able to reconnect to Zookeeper 
> and will hang indefinitely. Updating DNS or /etc/hosts with the new IP 
> address will not help the client to reconnect as the 
> zookeeper/client/StaticHostProvider resolves the connection string hosts at 
> creation time and never re-resolves.
> A solution would be for the client to notice that connection attempts fail 
> and attempt to re-resolve the hostnames in the connectString.



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