http://www.couchbase.com/issues This file is an XML representation of an issue en-us 5.2.4 845 26-12-2012 http://www.couchbase.com/issues/browse/JCBC-65 Couchbase Java Client I am evaluating the couchbase product and hit a brick wall immediately when running through the simple hello world example. <br/> <br/> I have a 3 node cluster running couchbase enterprise 1.8.2 on ubuntu 10.04 64 bit VMware images. All three are running in VMWare player instances on Windows 7 64bit. <br/> <br/> When I try to run the Main example on Windows 7 using Java6 (64 bit) the code blocks somewhere in the Client constructor. The result is the logging below. <br/> <br/> <br/> 2012-06-14 14:07:46.313 INFO com.couchbase.client.CouchbaseConnection: Added {QA sa=/192.168.186.150:11210, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue <br/> 2012-06-14 14:07:46.316 INFO com.couchbase.client.CouchbaseConnection: Added {QA sa=/192.168.186.151:11210, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue <br/> 2012-06-14 14:07:46.319 INFO com.couchbase.client.CouchbaseConnection: Added {QA sa=/192.168.186.152:11210, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue <br/> 2012-06-14 14:07:59.843 INFO com.couchbase.client.CouchbaseConnection: Connection state changed for <a href='mailto:sun.nio.ch.SelectionKeyImpl@24a4e2e3'>sun.nio.ch.SelectionKeyImpl@24a4e2e3</a> <br/> 2012-06-14 14:08:52.983 INFO com.couchbase.client.CouchbaseConnection: Connection state changed for <a href='mailto:sun.nio.ch.SelectionKeyImpl@21ec6696'>sun.nio.ch.SelectionKeyImpl@21ec6696</a> <br/> 2012-06-14 14:08:52.987 INFO com.couchbase.client.CouchbaseConnection: Connection state changed for <a href='mailto:sun.nio.ch.SelectionKeyImpl@27431340'>sun.nio.ch.SelectionKeyImpl@27431340</a> <br/> <br/> I have also tried debugging but the code blocks in the constructor at <br/> <br/> client = new CouchbaseClient(uris, &quot;default&quot;, &quot;&quot;); <br/> <br/> The program never completes. <br/> <br/> This works fine in a Linux environment with the following output received <br/> <br/> 2012-06-14 04:58:50.693 INFO com.couchbase.client.CouchbaseConnection: Added {QA sa=/192.168.186.150:11210, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue <br/> 2012-06-14 04:58:50.703 INFO com.couchbase.client.CouchbaseConnection: Added {QA sa=/192.168.186.151:11210, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue <br/> 2012-06-14 04:58:50.708 INFO com.couchbase.client.CouchbaseConnection: Added {QA sa=/192.168.186.152:11210, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue <br/> 2012-06-14 04:58:50.830 INFO com.couchbase.client.CouchbaseConnection: Connection state changed for <a href='mailto:sun.nio.ch.SelectionKeyImpl@1bc74f37'>sun.nio.ch.SelectionKeyImpl@1bc74f37</a> <br/> 2012-06-14 04:58:50.834 INFO com.couchbase.client.CouchbaseConnection: Connection state changed for <a href='mailto:sun.nio.ch.SelectionKeyImpl@3a21b220'>sun.nio.ch.SelectionKeyImpl@3a21b220</a> <br/> 2012-06-14 04:58:50.843 INFO com.couchbase.client.CouchbaseConnection: Connection state changed for <a href='mailto:sun.nio.ch.SelectionKeyImpl@732b3d53'>sun.nio.ch.SelectionKeyImpl@732b3d53</a> <br/> 2012-06-14 04:58:51.135 INFO com.couchbase.client.CouchbaseConnection: Shut down Couchbase client <br/> Set Succeeded <br/> Synchronous Get failed <br/> Asynchronous Get Succeeded: Hello World! <br/> <br/> Is there a JDK for windows 7 or a configuration setting that can be used to prevent this? OS: Windows 7 64bit <br/> JDK: 1.6.0_31 also 1.6.0_33 64 bit <br/> Couchbase enterprise edition running on 3 nodes all Ubuntu 10.04 64bit server (VMware images) <br/> JCBC-65

Client constructor blocks or deadlocks

Bug Major Reopened Unresolved Public Michael Nitschinger Martin Scott Thu, 14 Jun 2012 08:13:11 -0500 Wed, 17 Apr 2013 12:28:58 -0500 1.0.2 1.1-beta library 0 2 Thanks for giving the Java client library a spin. <br/> <br/> Were you able to connect to a single windows 7 node? I suspect it might be a firewall/networking issue and if you can use the netstat command (or the appropriate command on windows 7)? <br/> <br/> You may also want to follow the instructions noted in <br/> <br/> <a href="http://www.couchbase.com/docs/couchbase-manual-1.8/couchbase-bestpractice-cloud.html">http://www.couchbase.com/docs/couchbase-manual-1.8/couchbase-bestpractice-cloud.html</a> <br/> <br/> Changing IP addresses might be a cause for this. <br/> <br/> Finally, a more detailed log would be useful, if the network troubleshooting does not help. <br/> <br/> Please refer to <br/> <br/> <a href="http://www.couchbase.com/wiki/display/couchbase/Couchbase+Java+Client+Library">http://www.couchbase.com/wiki/display/couchbase/Couchbase+Java+Client+Library</a> <br/> <br/> for logging tips. <br/> Apologies that should read <br/> <br/> Couchbase Version: 1.8.0 enterprise edition (build-55) Detailed logging up to the point when the client hangs Thanks for the Log. I took a real quick look. <br/> <br/> Were you able to follow the steps in <br/> <br/> <a href="http://www.couchbase.com/docs/couchbase-manual-1.8/couchbase-bestpractice-cloud.html">http://www.couchbase.com/docs/couchbase-manual-1.8/couchbase-bestpractice-cloud.html</a> <br/> <br/> and use the ip address that you are able to connect to (via the admin console)? Hi Martin, <br/> <br/> Can you verify connectivity from the JDK on your windows box? <br/> <br/> This is what my connection code looks like: <br/> // Connection details for Couchbase <br/> List&lt;URI&gt; uris = new LinkedList&lt;URI&gt;(); <br/> uris.add(URI.create(&quot;<a href="http://10.4.2.3:8091/pools">http://10.4.2.3:8091/pools</a>&quot;)); <br/> <br/> CouchbaseClient client = null; <br/> try { <br/> client = new CouchbaseClient(uris, &quot;default&quot;, &quot;&quot;); <br/> } <br/> catch (Exception e) { <br/> System.err.println(&quot;except: connect: &quot; + e.getMessage()); <br/> System.exit(-1); <br/> } <br/> <br/> <br/> This will create a persistent connection to 8091 on 10.4.2.3 as well as connections to 11210 on every node in the cluster. <br/> <br/> ssh&#39;ing to 10.4.2.3 and running netstat - you should see something like whats below: <br/> <br/> <br/> netstat -nat|grep 10.32.3.50 <br/> tcp 0 0 10.4.2.3:11210 10.32.3.50:65437 ESTABLISHED <br/> tcp 0 0 10.4.2.3:8091 10.32.3.50:65442 ESTABLISHED <br/> tcp 0 304 ::ffff:10.4.2.3:22 ::ffff:10.32.3.50:65516 ESTABLISHED <br/> <br/> <br/> can you confirm this in your environment? <br/> <br/> thanks <br/> <br/> -Alex. Hi, thanks for the responses. <br/> <br/> Here is the netstat output from my Windows client <br/> <br/> &nbsp;&nbsp;TCP 192.168.186.1:139 0.0.0.0:0 LISTENING InHost <br/> &nbsp;&nbsp;TCP 192.168.186.1:51008 192.168.186.150:22 ESTABLISHED InHost <br/> &nbsp;&nbsp;TCP 192.168.186.1:53281 192.168.186.150:8091 TIME_WAIT InHost <br/> &nbsp;&nbsp;TCP 192.168.186.1:53284 192.168.186.150:11210 ESTABLISHED InHost <br/> &nbsp;&nbsp;TCP 192.168.186.1:53285 192.168.186.151:11210 ESTABLISHED InHost <br/> &nbsp;&nbsp;TCP 192.168.186.1:53286 192.168.186.152:11210 ESTABLISHED InHost <br/> &nbsp;&nbsp;TCP 192.168.186.1:53292 192.168.186.150:8091 ESTABLISHED InHost <br/> <br/> and from the first node in the cluster with the client and other nodes. <br/> <br/> tcp 0 0 192.168.186.150:41317 192.168.186.150:11210 ESTABLISHED <br/> tcp 0 0 192.168.186.150:35883 192.168.186.151:11210 ESTABLISHED <br/> tcp 0 0 192.168.186.150:11210 192.168.186.151:38013 ESTABLISHED <br/> tcp 0 0 192.168.186.150:21100 192.168.186.152:46834 ESTABLISHED <br/> tcp 0 0 192.168.186.150:11210 192.168.186.1:53284 ESTABLISHED <br/> tcp 0 0 192.168.186.150:57559 192.168.186.151:22 TIME_WAIT <br/> tcp 0 0 192.168.186.150:8091 192.168.186.1:53292 ESTABLISHED <br/> tcp 0 48 192.168.186.150:22 192.168.186.1:51008 ESTABLISHED <br/> tcp 0 0 192.168.186.150:11210 192.168.186.150:41317 ESTABLISHED <br/> tcp 0 0 192.168.186.150:42433 192.168.186.152:11210 ESTABLISHED <br/> tcp 0 0 192.168.186.150:11210 192.168.186.150:56214 ESTABLISHED <br/> tcp 0 0 192.168.186.150:56214 192.168.186.150:11210 ESTABLISHED <br/> tcp 0 0 192.168.186.150:11210 192.168.186.152:39222 ESTABLISHED <br/> tcp 0 0 192.168.186.150:21100 192.168.186.151:60945 ESTABLISHED <br/> <br/> <br/> I downloaded the source jars from the maven repo and debugging shows the client hanging at the getLatch().await() line below. There doesn&#39;t appear to be any thread calling the countDown method on the latch before or after this is called. <br/> <br/> &nbsp;&nbsp;private ChannelFuture getReceivedFuture() { <br/> &nbsp;&nbsp;&nbsp;&nbsp;try { <br/> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;getLatch().await(); <br/> &nbsp;&nbsp;&nbsp;&nbsp;} catch (InterruptedException ex) { <br/> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;finerLog(&quot;Getting received future has been interrupted.&quot;); <br/> &nbsp;&nbsp;&nbsp;&nbsp;} <br/> &nbsp;&nbsp;&nbsp;&nbsp;return receivedFuture; <br/> &nbsp;&nbsp;} <br/> <br/> <br/> Martin. The stack trace where the client blocks <br/> <br/> Thread [main] (Stepping) <br/> BucketUpdateResponseHandler.getReceivedFuture() line: 147 <br/> BucketUpdateResponseHandler.getLastResponse() line: 127 <br/> BucketMonitor.startMonitor() line: 183 <br/> ConfigurationProviderHTTP.subscribe(String, Reconfigurable) line: 243 <br/> CouchbaseClient.&lt;init&gt;(CouchbaseConnectionFactory, boolean) line: 158 <br/> CouchbaseClient.&lt;init&gt;(CouchbaseConnectionFactory) line: 125 <br/> CouchbaseClient.&lt;init&gt;(List&lt;URI&gt;, String, String) line: 77 <br/> Main.main(String[]) line: 67 <br/> <br/> I am having this exact same problem. Using windows 7 64 bit trying to connect to ubuntu. <br/> I am using 32 bit os on linux and couchbase server 2.0. <br/> <br/> I am also using the lastest java client version 1.1 <br/> <br/> Same Issue as described below. <br/> The only workaround is to not use windows, if my java client is running on linux then it will work with no issues, it just deadlocks on the windows machine. <br/> I am reopening the issue as we see this error again on some environment: <br/> - Yuval <br/> - <a href="http://www.couchbase.com/issues/browse/JCBC-65">http://www.couchbase.com/issues/browse/JCBC-65</a> <br/> ... <br/> <br/> Let me know if you prefer me to create a new issue for 1.1.x Rank 10624