Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm
Precedence: bulk
Date: Wed, 30 Jan 2013 21:29:12 +0000 (UTC)
From: "Enis Soztutar (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12608168.1348013206695.217955.1359581352781@arcas>
In-Reply-To: <JIRA.12608168.1348013206695@arcas>
References: <JIRA.12608168.1348013206695@arcas>
Subject: [jira] [Updated] (HBASE-6825) [WINDOWS] Java NIO socket channels
 does not work with Windows ipv6
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


     [ https://issues.apache.org/jira/browse/HBASE-6825?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Enis Soztutar updated HBASE-6825:
---------------------------------

    Attachment: hbase-6825_v5-trunk.patch

Attaching v5 patch. Fixed -Djava.net.preferIPv4Stack=true issue. 
                
> [WINDOWS] Java NIO socket channels does not work with Windows ipv6
> ------------------------------------------------------------------
>
>                 Key: HBASE-6825
>                 URL: https://issues.apache.org/jira/browse/HBASE-6825
>             Project: HBase
>          Issue Type: Sub-task
>    Affects Versions: 0.94.3, 0.96.0
>         Environment: JDK6 on windows for ipv6. 
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>         Attachments: hbase-6825_v3-0.94.patch, hbase-6825_v3-trunk.patch, hbase-6825_v4-trunk.patch, hbase-6825_v5-trunk.patch
>
>
> While running the test TestAdmin.testCheckHBaseAvailableClosesConnection(), I noticed that it takes very long, since it sleeps for 2sec * 500, because of zookeeper retries. 
> The root cause of the problem is that ZK uses Java NIO to create ServerSorcket's from ServerSocketChannels. Under windows, the ipv4 and ipv6 is implemented independently, and Java seems that it cannot reuse the same socket channel for both ipv4 and ipv6 sockets. We are getting "java.net.SocketException: Address family not supported by protocol
> family" exceptions. When, ZK client resolves "localhost", it gets both v4 127.0.0.1 and v6 ::1 address, but the socket channel cannot bind to both v4 and v6. 
> The problem is reported as:
> http://bugs.sun.com/view_bug.do?bug_id=6230761
> http://stackoverflow.com/questions/1357091/binding-an-ipv6-server-socket-on-windows
> Although the JDK bug is reported as resolved, I have tested with jdk1.6.0_33 without any success. Although JDK7 seems to have fixed this problem. In ZK, we can replace the ClientCnxnSocket implementation from ClientCnxnSocketNIO to a non-NIO one, but I am not sure that would be the way to go.
> Disabling ipv6 resolution of "localhost" is one other approach. I'll test it to see whether it will be any good. 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira