纠结的mod_jk与jetty的组合

最近，公司要尝试jetty，我们几个人凑在一块做一下jetty相关的测试. 希望可以用轻量级的jetty替换Jboss , tomact，目前还是小步前进，还是以jetty软件的形式引入，以后Embed Jetty也会是一种方向，真正做到轻量级。


我这边主要测试一下, mod_jk与Jetty链接(以前一直都是用mod_jk 1.2.18)

配置形式： Apache 2.2 + mod_jk 1.2.18 + Jetty 7.1.5

我这里不详细描述具体的安装配置过程，这类教程网上一搜一大把，只记录重点的几个配置和遇到的问题，头痛中。。。

1. Apache 2.2配置

1.......  
2.Include /home/admin/benni/script/config/mod_jk.conf  
3.......  

2. mod_jk 1.2.18配置

1.LoadModule jk_module /usr/alibaba/httpd/mod_jk.so  
2.JkLogFile "|/usr/alibaba/cronolog/sbin/cronolog /home/admin/output/logs/jk_logs/mod_jk.log.%w"  
3.JkLogLevel error  
4.JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"  
5.  
6.JkOptions +ForwardURICompatUnparsed  
7.JkOptions +ForwardDirectories  
8.  
9.JkMountCopy All  
10.JkShmFile /home/admin/output/jk.shm  
11.  
12......  
13.  
14.JkWorkerProperty worker.list=localnode  
15.  
16.JkWorkerProperty worker.localnode.port=7011  
17.JkWorkerProperty worker.localnode.host=localhost  
18.JkWorkerProperty worker.localnode.type=ajp13  
19.JkWorkerProperty worker.localnode.lbfactor=1  
20.  
21.JkWorkerProperty worker.localnode.socket_keepalive=True  
22.JkWorkerProperty worker.localnode.socket_timeout=20  
23.  
24.JkWorkerProperty worker.localnode.connection_pool_minsize=25  
25.JkWorkerProperty worker.localnode.connection_pool_timeout=600  

3. Jetty 配置

1.<Call name="addConnector">  
2.          <Arg>  
3.              <New class="org.eclipse.jetty.ajp.Ajp13SocketConnector">  
4.                   <Set name="port">7011</Set>  
5.                   <!--  
6.                   <Set name="maxIdleTime">600000</Set>  
7.                   <Set name="acceptQueueSize">256</Set>  
8.                   <Set name="statsOn">false</Set>  
9.                   <Set name="confidentialPort">8443</Set>  
10.                   <Set name="lowResourcesMaxIdleTime">5000</Set>  
11.                   <Set name="responseBufferSize">65536</Set>  
12.                   -->  
13.              </New>  
14.          </Arg>  
15.    </Call>  
16.   

出现的问题：

1.java.io.IOException: FULL  
2.        at org.eclipse.jetty.ajp.Ajp13Parser.fill(Ajp13Parser.java:199)  
3.        at org.eclipse.jetty.ajp.Ajp13Parser.parseNext(Ajp13Parser.java:553)  
4.        at org.eclipse.jetty.ajp.Ajp13Parser.parseAvailable(Ajp13Parser.java:156)  
5.        at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:424)  
6.        at org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:241)  
7.        at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)  
8.        at java.lang.Thread.run(Thread.java:619)  

2. mod_jk wrong message

1.[Wed Oct 20 19:49:34 2010][20298:1599269184] [error] ajp_connection_tcp_get_message::jk_ajp_common.c (1212): wrong message size 8195 8192 from 127.0.0.1:7011  
2.[Wed Oct 20 19:49:34 2010][20298:1599269184] [error] ajp_get_reply::jk_ajp_common.c (1992): (localnode) Tomcat is down or network problems. Part of the response has already been sent to the client  
3.[Wed Oct 20 19:49:34 2010][20298:1599269184] [error] ajp_connection_tcp_get_message::jk_ajp_common.c (1212): wrong message size 8195 8192 from 127.0.0.1:7011  
4.[Wed Oct 20 19:49:34 2010][20298:1599269184] [error] ajp_get_reply::jk_ajp_common.c (1992): (localnode) Tomcat is down or network problems. Part of the response has already been sent to the client  
5.[Wed Oct 20 19:49:34 2010][20298:1599269184] [error] ajp_service::jk_ajp_common.c (2466): (localnode) connecting to tomcat failed.  

3. mod_jk  can't receive the response body

1.[Wed Oct 20 19:50:00 2010][21270:1598732608] [error] ajp_connection_tcp_get_message::jk_ajp_common.c (1242): (localnode) can't receive the response body message from tomcat, network problems or tomcat (127.0.0.1:7011) is down (errno=11)  
2.[Wed Oct 20 19:50:00 2010][21270:1598732608] [error] ajp_get_reply::jk_ajp_common.c (1992): (localnode) Tomcat is down or network problems. Part of the response has already been sent to the client  
3.[Wed Oct 20 19:50:00 2010][21270:1598732608] [error] ajp_service::jk_ajp_common.c (2466): (localnode) connecting to tomcat failed  

最后：

查询了相关资料，发现网上还是有很多人出现了类似的情况，目前一直还未解决问题，先记录着，等以后解决

 

几点建议：

1.  jetty使用jetty 7.1.6， 修复了几个问题，可查看 changeLog 

2.  关注下jdk 1.6中nio的bug ,  JDK1.6+Problems , 可能会出现类似mail list提到的问题，cpu使用100%, 具体查看http://dev.eclipse.org/mhonarc/lists/jetty-users/msg00613.html

  

相关资料：

• 网上类似问题 ：  http://comments.gmane.org/gmane.comp.java.jetty.support/10660
• jetty codehaus的jira库： http://jira.codehaus.org/browse/JETTY
• jetty mail list :   http://dev.eclipse.org/mhonarc/lists/jetty-users/threads.html http://archive.codehaus.org/lists/org.codehaus.jetty.user/
• tomcat mail list : http://mail-archives.apache.org/mod_mbox/tomcat-users/