No authentication.
On Tue, Dec 10, 2013 at 9:54 AM, Raúl Gutiérrez Segalés <[email protected] > wrote: > Hi, > > On 10 December 2013 09:07, Dutch Meyer <[email protected]> wrote: > >> I've been tracking an error we see occasionally on our cluster, we're >> currently running behind trunk at build >> 047b07a298d84e9755c6e06c035787ce397f4958. >> >> We've been seeing this error, it's quite rare and so far I've had no luck >> reproducing it in a controlled setting. >> >> The symptom is that C clients see errors of the form: >> >> >> ZOO_ERROR@handle_socket_error_msg@2726: Socket [10.11.13.2:2181] >> >> zk retcode=-2, errno=115(Operation now in progress): >> unexpected server response: expected 0x529a8be8, but received 0x529a8be6 >> >> (note the expected/received entries are reversed here, we always receive a >> larger entry than we were expecting). >> >> Kazoo clients are also failing similarly, with the error: >> >> zookeeper: xids do not match, expected %r received %r', 1435, 1436 >> >> Generally we see these failures in groups, where multiple clients will see >> these failures from one server over a 5 or ten second windows. Sometimes >> one client can fail with the error multiple times in that period. >> >> I'd appreciate any insight anyone can give me into why this is happening >> and how we might fix it. Has anyone seen this before? Any hunches what >> code or conditions I might investigate to reliably trigger or fix the >> error? I'd just greatly appreciate any help in identifying the problem. >> > > Are you using authentication? I wonder if your read/write ops are racing > with your add_auth calls > which would cause the out of order xids. > > > -rgs > -- -=-Dutch
