I was trying to enable server-side DRDA tracing while running
a particular test by hand. I tweaked procedure_derby.properties
to add
derby.drda.traceAll=true
derby.drda.traceDirectory=/some/directory
I created /some/directory and then ran my test, only to see
it *hang*. I used kill -QUIT to get a stack trace from my
test and am including that information below.
I guess what I'm trying to figure out here is: it seems that
when the DRDA tracing fails with a security exception, some
bit of Network Server session initialization fails and instead
of getting a clear error, I get a hang instead.
Is this a bug? Or is this just the way it works?
BTW, what is the best/easiest way to turn on such tracing
while running a particular test; I seem to be stomping and
pawing at the ground and not having terribly much success...
thanks,
bryan
-bash-2.05b$ cat ./DerbyNetClient/procedure/DerbyNetClient.out
Server is ready to accept connections on port 1527.
access denied (java.io.FilePermission
/home/bpendleton/src/derby/jira-614/test_proc/serverTraces/Server1.trace write)
java.security.AccessControlException: access denied (java.io.FilePermission
/home/bpendleton/src/derby/jira-614/test_proc/serverTraces/Server1.trace write)
at
java.security.AccessControlContext.checkPermission(AccessControlContext.java:269)
at
java.security.AccessController.checkPermission(AccessController.java:401)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:524)
at java.lang.SecurityManager.checkWrite(SecurityManager.java:954)
at java.io.FileOutputStream.<init>(FileOutputStream.java:169)
at java.io.FileOutputStream.<init>(FileOutputStream.java:70)
at java.io.FileWriter.<init>(FileWriter.java:46)
at
org.apache.derby.impl.drda.DssTrace.startComBufferTrace(DssTrace.java:169)
at org.apache.derby.impl.drda.Session.initTrace(Session.java:136)
at org.apache.derby.impl.drda.Session.initialize(Session.java:256)
at org.apache.derby.impl.drda.Session.<init>(Session.java:93)
at org.apache.derby.impl.drda.ClientThread.run(ClientThread.java:90)
at java.lang.Thread.run(Thread.java:534)
Full thread dump Java HotSpot(TM) Client VM (1.4.2_06-b03 mixed mode):
"Thread-2" prio=1 tid=0x0835a800 nid=0x7e89 runnable [a988d000..a988d87c]
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
- locked <0xaaf478b8> (a java.net.PlainSocketImpl)
at java.net.ServerSocket.implAccept(ServerSocket.java:448)
at java.net.ServerSocket.accept(ServerSocket.java:419)
at org.apache.derby.impl.drda.ClientThread$1.run(ClientThread.java:64)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.derby.impl.drda.ClientThread.run(ClientThread.java:60)
at java.lang.Thread.run(Thread.java:534)
"Thread-0" daemon prio=1 tid=0x083a30d0 nid=0x7e89 in Object.wait()
[a990e000..a990e87c]
at java.lang.Object.wait(Native Method)
- waiting on <0xaaf40050> (a java.util.TaskQueue)
at java.lang.Object.wait(Object.java:429)
at java.util.TimerThread.mainLoop(Timer.java:403)
- locked <0xaaf40050> (a java.util.TaskQueue)
at java.util.TimerThread.run(Timer.java:382)
"derby.antiGC" daemon prio=1 tid=0x08373248 nid=0x7e89 in Object.wait()
[a998f000..a998f87c]
at java.lang.Object.wait(Native Method)
- waiting on <0xab3f3490> (a
org.apache.derby.impl.services.monitor.AntiGC)
at java.lang.Object.wait(Object.java:429)
at
org.apache.derby.impl.services.monitor.AntiGC.run(BaseMonitor.java:2204)
- locked <0xab3f3490> (a org.apache.derby.impl.services.monitor.AntiGC)
at java.lang.Thread.run(Thread.java:534)
"Signal Dispatcher" daemon prio=1 tid=0x080a77f8 nid=0x7e89 waiting on
condition [0..0]
"Finalizer" daemon prio=1 tid=0x08092b08 nid=0x7e89 in Object.wait()
[aad3d000..aad3d87c]
at java.lang.Object.wait(Native Method)
- waiting on <0xab3ac8c8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
- locked <0xab3ac8c8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
"Reference Handler" daemon prio=1 tid=0x08091f60 nid=0x7e89 in Object.wait()
[aadbe000..aadbe87c]
at java.lang.Object.wait(Native Method)
- waiting on <0xab3ac930> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:429)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:115)
- locked <0xab3ac930> (a java.lang.ref.Reference$Lock)
"main" prio=1 tid=0x0805c788 nid=0x7e89 in Object.wait() [bfffb000..bfffb968]
at java.lang.Object.wait(Native Method)
- waiting on <0xab3c2d88> (a java.lang.Object)
at java.lang.Object.wait(Object.java:429)
at
org.apache.derby.impl.drda.NetworkServerControlImpl.blockingStart(NetworkServerControlImpl.java:575)
- locked <0xab3c2d88> (a java.lang.Object)
at
org.apache.derby.impl.drda.NetworkServerControlImpl.executeWork(NetworkServerControlImpl.java:1699)
at
org.apache.derby.drda.NetworkServerControl.main(NetworkServerControl.java:238)
"VM Thread" prio=1 tid=0x08090d00 nid=0x7e89 runnable
"VM Periodic Task Thread" prio=1 tid=0x080a9fb0 nid=0x7e89 waiting on condition
"Suspend Checker Thread" prio=1 tid=0x080a6ca0 nid=0x7e89 runnable
