50%-75% connection loss exceptions using zkpython
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Key: ZOOKEEPER-676
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-676
Project: Zookeeper
Issue Type: Bug
Components: contrib, contrib-bindings
Affects Versions: 3.2.2
Environment: Mac OS X 10.5.8, MacBook Air Intel Core 2 Duo @
1.86GHz, Python 2.5.1, ZooKeeper 3.2.2 Standalone
Reporter: Josh Fraser
I get about 50-75% connection loss exceptions and about 10% Bus Error when
using the contrib/zkpython zookeeper.so. Below is the exception:
2010-02-21
16:57:56,138:18481(0xb0081000):zoo_er...@handle_socket_error_msg@1359: Socket
[fe80::1002:885:7f00:1:2181] zk retcode=-4, errno=47(Address family not
supported by protocol family): connect() call failed
Traceback (most recent call last):
File "./zksh.py", line 63, in <module>
2010-02-21 16:57:56,138:18481(0xb0081000):zoo_i...@check_events@1439: initiated
connection to server [127.0.0.1:2181]
zkcli.dispatch(cmd,*args)
File "./zksh.py", line 56, in dispatch
returned = run(*args)
File "./zksh.py", line 48, in ls
print "\n".join(self.cmd.listNode(node))
File "/Users/josh/git/zktools/commands.py", line 22, in listNode
for path in zookeeper.get_children(self.zk, node):
zookeeper.ConnectionLossException: connection loss
I've run this in gdb and have this backtrace:
#0 free_pywatcher (pw=0x0) at src/c/zookeeper.c:199
#1 0x0025ae09 in pyzoo_exists (self=0x0, args=0x0) at src/c/zookeeper.c:765
#2 0x0018f51e in PyEval_EvalFrameEx ()
#3 0x00191173 in PyEval_EvalCodeEx ()
#4 0x0013b488 in PyFunction_SetClosure ()
#5 0x00121505 in PyObject_Call ()
#6 0x0018fcd0 in PyEval_EvalFrameEx ()
#7 0x00191173 in PyEval_EvalCodeEx ()
#8 0x0013b488 in PyFunction_SetClosure ()
#9 0x00121505 in PyObject_Call ()
#10 0x0018fcd0 in PyEval_EvalFrameEx ()
#11 0x00191173 in PyEval_EvalCodeEx ()
#12 0x0018f79d in PyEval_EvalFrameEx ()
#13 0x00191173 in PyEval_EvalCodeEx ()
#14 0x00191260 in PyEval_EvalCode ()
#15 0x001a883c in PyErr_Display ()
#16 0x001aa4ab in PyRun_InteractiveOneFlags ()
#17 0x001aa5f9 in PyRun_InteractiveLoopFlags ()
#18 0x001aaa2b in PyRun_AnyFileExFlags ()
#19 0x001b5a57 in Py_Main ()
#20 0x00001fca in ?? ()
zookeeper.c @ line 199:
void free_pywatcher( pywatcher_t *pw)
{
Py_DECREF(pw->callback);
free(pw);
}
That's as far as I've dug so far -- I ended up just writing a retry decorator
to get around it for now. On the same machine, the zkCli.sh test client works
flawlessly.
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