JMX over proxy

[mdobrinin]

Hello,

I am having an issue with monitoring JMX over an active proxy. I am getting the following error:

28481:20121019:130911.354 In get_values()
 28481:20121019:130911.355 In DCconfig_get_poller_items() poller_type:4
 28481:20121019:130911.355 End of DCconfig_get_poller_items():0
 28481:20121019:130911.355 End of get_values():0
 28481:20121019:130911.355 java poller #2 spent 0.000489 seconds while updating 0 values
 28481:20121019:130911.355 In DCconfig_get_poller_nextcheck() poller_type:4
 28481:20121019:130911.355 End of DCconfig_get_poller_nextcheck():-1
 28481:20121019:130911.356 sleeping for 5 seconds
 28452:20121019:130911.356 Getting Java values failed: ZBX_TCP_READ() failed: [4] Interrupted system call
 28452:20121019:130911.356 End of get_values_java()
 28452:20121019:130911.356 Item [host:jmx["java.lang:type=Compilation",Name]] error: 
ZBX_TCP_READ() failed: [4] Interrupted system call
28452:20121019:130911.356 End of get_value():GATEWAY_ERROR
 28452:20121019:130911.356 In deactivate_host() hostid:10301 itemid:41972 type:16
 28452:20121019:130911.356 deactivate_host() errors_from:1350595261 available:2
 28452:20121019:130911.356 query [txnlev:1] [begin;]
 28452:20121019:130911.357 query [txnlev:1] [update hosts set jmx_error='ZBX_TCP_READ() failed: [4] Interrupted system call',jmx_disable_until=1350677411 where hostid=10301]
 28452:20121019:130911.358 query [txnlev:1] [commit;]
 28452:20121019:130911.359 End of deactivate_host()
 28452:20121019:130911.360 End of get_values():1

Javagateway is running and its port is correctly set. I am fairly confident that it is not a proxy configuration issue because I am monitoring agent checks on the same machine through the proxy.

Is anyone aware of what

Getting Java values failed: ZBX_TCP_READ() failed: [4] Interrupted system call

means?