[jira] [Created] (CASSANDRA-11073) Cannot contact other nodes on Windows 7 ccm

["Paulo Motta (JIRA)" <ji...@apache.org>]

Paulo Motta created CASSANDRA-11073:
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             Summary: Cannot contact other nodes on Windows 7 ccm
                 Key: CASSANDRA-11073
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11073
             Project: Cassandra
          Issue Type: Bug
          Components: Streaming and Messaging
         Environment: windows 7
            Reporter: Paulo Motta
            Assignee: Paulo Motta
            Priority: Minor


Before CASSANDRA-9309 was fixed the {{OutboundTcpConnectionPool}} did not bind the client socket to a specific ip/port, so the Windows kernel always picked {{127.0.0.1:random_port}} as client socket address for ccm nodes, regardless of the {{listen_address}} value.

After fixing CASSANDRA-9309 the {{OutboundTcpConnectionPool}} now binds outgoing client sockets to {{listen_address:random_port}}.

So any ccm cluster with more than one node will bind client sockets to {{127.0.0.n}} where n is the node id.

However, the nodes cannot contact each other because connections remain in the {{SYN_SENT}} state on Windows 7, as shown by netstats:
{noformat}
  TCP    127.0.0.2:50908        127.0.0.1:7000         SYN_SENT
{noformat}

This bug is preventing the execution of dtests on Windows 7, and was also experienced by [~Stefania].

I suspect its a configuration/environment problem, but firewall and group policies are disabled. The funny thing is that it does not happen on cassci, but afaik there are no Windows 7 nodes there

Commenting [this line|https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/net/OutboundTcpConnectionPool.java#L139] fixes the issue, but it's definitely not a solution.



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