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Joshua McKenzie updated CASSANDRA-9902: --------------------------------------- Attachment: Not_Dep.jpg I don't think it's DEP - I installed a 32-bit JDK, disabled dep via bcdedit, and reproduced the crash via the dtest (see attached image). Also, VMAttach.java doesn't actually crash C* on my system when I run it (though I had to add System.loadlibrary("attach") to get it to run properly). I'm running Windows 10 on this dev box so that might be a confounding factor, but I think the whole "disabled DEP w/32-bit app and it crashes" thing probably rules that out. There's definitely *something* wrong though, that's for sure. :) The crash from java.exe when loaded up in VS has Exception code 0xC0000005, "The thread tried to read from or write to a virtual address for which it does not have the appropriate access". I wonder if it might be worth it to try and reproduce with OpenJDK - if it does, we can generate .pdb files for that in visual studio and actually debug a lot closer to the metal. Seems like a hell of a lot of effort to debug an http bridge JMX attacher though, that's for sure. A cursory search doesn't show up much in the python ecosystem other than Jython for connecting to JMX, so I'm not sure we have a lot of alternative options for this or other approaches to help narrow down debugging. And here I thought I was giving you an easy win by kicking this ticket your way. Sorry about that. > Windows dtest: invalid jolokia agent path > ----------------------------------------- > > Key: CASSANDRA-9902 > URL: https://issues.apache.org/jira/browse/CASSANDRA-9902 > Project: Cassandra > Issue Type: Sub-task > Reporter: Joshua McKenzie > Assignee: Paulo Motta > Priority: Minor > Labels: Windows > Fix For: 2.2.x > > Attachments: Not_Dep.jpg, VMAttach.java, win-crashlogs.zip > > > A variety of tests are failing with similar: > {noformat} > 05:39:07 > ====================================================================== > 05:39:07 ERROR: change_durable_writes_test > (configuration_test.TestConfiguration) > 05:39:07 > ---------------------------------------------------------------------- > 05:39:07 Traceback (most recent call last): > 05:39:07 File > "D:\jenkins\workspace\cassandra-2.2_dtest_win32\cassandra-dtest\configuration_test.py", > line 63, in change_durable_writes_test > 05:39:07 durable_init_size = commitlog_size(durable_node) > 05:39:07 File > "D:\jenkins\workspace\cassandra-2.2_dtest_win32\cassandra-dtest\configuration_test.py", > line 127, in commitlog_size > 05:39:07 with JolokiaAgent(node) as jmx: > 05:39:07 File > "D:\jenkins\workspace\cassandra-2.2_dtest_win32\cassandra-dtest\jmxutils.py", > line 188, in __enter__ > 05:39:07 self.start() > 05:39:07 File > "D:\jenkins\workspace\cassandra-2.2_dtest_win32\cassandra-dtest\jmxutils.py", > line 80, in start > 05:39:07 subprocess.check_output(args, stderr=subprocess.STDOUT) > 05:39:07 File "D:\Python27\lib\subprocess.py", line 573, in check_output > 05:39:07 raise CalledProcessError(retcode, cmd, output=output) > 05:39:07 CalledProcessError: Command '('java', '-jar', > 'lib\\jolokia-jvm-1.2.3-agent.jar', '--host', '127.0.0.1', 'start', '3436')' > returned non-zero exit status 2 > 05:39:07 -------------------- >> begin captured logging << > -------------------- > 05:39:07 dtest: DEBUG: cluster ccm directory: d:\temp\dtest-kjkypw > 05:39:07 --------------------- >> end captured logging << > --------------------- > {noformat} > Likely related: > {noformat} > 20:54:46 Failed to start jolokia agent (command was: java -jar > lib\jolokia-jvm-1.2.3-agent.jar --host 127.0.0.1 start 3436): Command > '('java', '-jar', 'lib\\jolokia-jvm-1.2.3-agent.jar', '--host', '127.0.0.1', > 'start', '3436')' returned non-zero exit status 2 > 20:54:46 Exit status was: 2 > 20:54:46 Output was: Error: Registry key 'Software\JavaSoft\Java Runtime > Environment'\CurrentVersion' > 20:54:46 has value '1.8', but '1.7' is required. > 20:54:46 Error: could not find java.dll > 20:54:46 Error: Could not find Java SE Runtime Environment. > {noformat} > And at the top of jmxutils.py we see: > {code} > JOLOKIA_JAR = os.path.join('lib', 'jolokia-jvm-1.2.3-agent.jar') > {code} > So that's not going to work out too well on Windows. -- This message was sent by Atlassian JIRA (v6.3.4#6332)