The information about how the servers are connected is important, because we
have exactly these types of situations in some of our applications (not using
Cassandra) when firewall administrators/configurators get “creative” about
“enhancing” security. Other things can cause this type of situation, but in my
limited experience, I’ve only ever seen it caused by the firewall.
Best regards,
Jacob
On 1 Jul 2014, at 12:55 pm, cass savy casss...@gmail.com wrote:
The app and Cassandra are connected via firewall. For some reason,
connections are still remaining on Cassandra side even after stopping
services on app server.
On Mon, Jun 30, 2014 at 3:29 PM, Jacob Rhoden jacob.rho...@me.com wrote:
How are the two machines connected? Direct cable? Via a hub, router,
firewall, wan?
On 1 Jul 2014, at 6:01 am, cass savy casss...@gmail.com wrote:
We use Datastax Java driver version 1.0.6. Application is running into
issues connecting to the 3 node cluster. What is cause for it? Application
is not able to establish a connection at all. I see this error
intermittently few time every other day.
Is the issue related to read/write timeout?Do I need to increase *timeout*
values in yaml ?
APP logs
2014-06-27 17:33:47
Full thread dump Java HotSpot(TM) 64-Bit Server VM (23.5-b02 mixed mode):
RMI TCP Connection(105)-10.198.49.16 - Thread t@247
java.lang.Thread.State: RUNNABLE
at java.net.SocketInputStream.socketRead0(Native Method)
at
java.net.SocketInputStream.read(SocketInputStream.java:150)
at
java.net.SocketInputStream.read(SocketInputStream.java:121)
at
java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at
java.io.BufferedInputStream.read(BufferedInputStream.java:254)
- locked 68d37818 (a java.io.BufferedInputStream)
at java.io.FilterInputStream.read(FilterInputStream.java:83)
at
sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
at
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808)
at
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
All I see in the Cassandra logs:
ERROR [Native-Transport-Requests:2704] 2014-06-27 16:33:23,339
ErrorMessage.java (line 210) Unexpected exception during request
java.io.IOException: Connection reset by peer
at sun.nio.ch.FileDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(Unknown Source)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.read(Unknown Source)
at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
at
org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:59)
at
org.jboss.netty.channel.socket.nio.AbstractNioWorker.processSelectedKeys(AbstractNioWorker.java:472)
at
org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:333)
at
org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:35)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown
Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
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