Your instructions to reproduce the issue sound about right. There is a variable that is initialized during session creation and read during closing, I think we are running into a race here.
Feel free to create a JIRA for this issue or tell me if you would like me to do it. Any additional insights that you could put in the JIRA ticket would be appreciated. I don't know of any reported issue that would be related, but I could be missing something. Thanks, Abe On Fri, Sep 8, 2017, at 00:12, Enrico Olivelli - Diennea wrote: > Il giorno gio, 07/09/2017 alle 15.36 -0700, Abraham Fine ha scritto: > > My fault, I should have read the subject. :) > > I have an idea of what is causing this issue. Just out of curiosity, > besides the ugly stack trace, is this issue associated with any > unexpected behavior from zookeeper? > > > Thank you Abraham for your quick response, > > Honestly I do not know, it came out on unit tests only once and I do not > have logs on the server side, sorry. > The test is about dealing with an expired session, something like: > - start a session > - create a new ZooKeeper with the same sessionid and password and close > it -> the session expires > - close the session -> boom! > > I saw it only once, and I have upgraded my env to zookeeper 3.5.3-BETA 2 > months ago > It is a unit test so ZK server is running in the same JVM > > Anyway IMHO this is a bad error and the client should not ever crash in > spite of weird server side behavior > Do you think it is related to another reported issue ? > > I can help on fixing it > > Cheers > Enrico > > > > > Thanks, > Abe > > On Thu, Sep 7, 2017, at 12:47, Enrico Olivelli wrote: > > > 3.5.3 Beta , my bad I have only written it in the subject > Thanks > Enrico > > On gio 7 set 2017, 21:18 Abraham Fine > <af...@apache.org<mailto:af...@apache.org>> wrote: > > > > Would you mind sharing which version of ZooKeeper you are using? > > Thanks, > Abe > > On Thu, Sep 7, 2017, at 06:59, Enrico Olivelli wrote: > > > Hi all, > I have hit this error during internal tests of my product. The problem is > not always reproducible > > java.lang.NullPointerException > at > > > > org.apache.zookeeper.ClientCnxnSocketNetty.onClosing(ClientCnxnSocketNetty.java:206) > > > at > org.apache.zookeeper.ClientCnxn$SendThread.close(ClientCnxn.java:1395) > at org.apache.zookeeper.ClientCnxn.disconnect(ClientCnxn.java:1440) > at org.apache.zookeeper.ClientCnxn.close(ClientCnxn.java:1467) > at org.apache.zookeeper.ZooKeeper.close(ZooKeeper.java:1319) > > I did not find any issue in JIRA related to this stacktrace > > Does anyone ever hit this problem ? > Otherwise I will create a JIRA and start looking at the cause > > Thanks > Enrico Olivelli > > > > > > -- > > > -- Enrico Olivelli > > > -- > > Enrico Olivelli Software Development Manager @Diennea Tel.: (+39) 0546 > 066100 - Int. 925 Viale G.Marconi 30/14 - 48018 Faenza (RA) MagNews - > E-mail Marketing Solutions http://www.magnews.it Diennea - Digital > Marketing Solutions http://www.diennea.com > > ________________________________ > > Iscriviti alla nostra newsletter per rimanere aggiornato su digital ed > email marketing! http://www.magnews.it/newsletter/ > > The information in this email is confidential and may be legally > privileged. If you are not the intended recipient please notify the > sender immediately and destroy this email. Any unauthorized, direct or > indirect, disclosure, copying, storage, distribution or other use is > strictly forbidden.
