zookeeper-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Enrico Olivelli <eolive...@gmail.com>
Subject Re: Zookeeper 3.5.6 - Exception causing close of session 0x0: null
Date Thu, 24 Oct 2019 22:17:55 GMT
Sebastian
This 'null' looks like a NullPointerException (this kind f exceptions
tracks only the full stacktrace at the first occurrence usually)
Can you find some full stacktrace of the error?
Are you able to enable more detailed logging?

Do you see errors on the client (kafka broker?) ? Maybe on
oeg.apache.zookeeper.xxx logs

Enrico

Il ven 25 ott 2019, 00:05 Sebastian Schmitz <
sebastian.schmitz@propellerhead.co.nz> ha scritto:

> Hello,
>
> I did a rolling upgrade of the Zookeeper from 3.4.14 to 3.5.6 on 23rd in
> my Test-Environment. It's zookeeping a three node Kafka-Cluster running
> on 2.3.0.
>
> After the update I get spammed with these warnings:
>
> Oct 25 10:56:23   zookeeper_node_1: 2019-10-24 21:56:23,119 [myid:1] -
> WARN  [NIOWorkerThread-6:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:23   zookeeper_node_2: 2019-10-24 21:56:23,478 [myid:2] -
> WARN  [NIOWorkerThread-1:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:23   zookeeper_node_3: 2019-10-24 21:56:23,531 [myid:3] -
> WARN  [NIOWorkerThread-3:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:23   zookeeper_node_1: 2019-10-24 21:56:23,776 [myid:1] -
> WARN  [NIOWorkerThread-8:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:23   zookeeper_node_2: 2019-10-24 21:56:23,879 [myid:2] -
> WARN  [NIOWorkerThread-5:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:24   zookeeper_node_3: 2019-10-24 21:56:24,086 [myid:3] -
> WARN  [NIOWorkerThread-4:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:24   zookeeper_node_1: 2019-10-24 21:56:24,090 [myid:1] -
> WARN  [NIOWorkerThread-4:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:24   zookeeper_node_2: 2019-10-24 21:56:24,497 [myid:2] -
> WARN  [NIOWorkerThread-2:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:24   zookeeper_node_3: 2019-10-24 21:56:24,601 [myid:3] -
> WARN  [NIOWorkerThread-1:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:24   zookeeper_node_1: 2019-10-24 21:56:24,798 [myid:1] -
> WARN  [NIOWorkerThread-3:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:24   zookeeper_node_3: 2019-10-24 21:56:24,904 [myid:3] -
> WARN  [NIOWorkerThread-6:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:25   zookeeper_node_2: 2019-10-24 21:56:25,007 [myid:2] -
> WARN  [NIOWorkerThread-3:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:25   zookeeper_node_1: 2019-10-24 21:56:25,260 [myid:1] -
> WARN  [NIOWorkerThread-5:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:25   zookeeper_node_3: 2019-10-24 21:56:25,467 [myid:3] -
> WARN  [NIOWorkerThread-8:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:25   zookeeper_node_2: 2019-10-24 21:56:25,619 [myid:2] -
> WARN  [NIOWorkerThread-8:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:25   zookeeper_node_1: 2019-10-24 21:56:25,666 [myid:1] -
> WARN  [NIOWorkerThread-7:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:26   zookeeper_node_3: 2019-10-24 21:56:25,923 [myid:3] -
> WARN  [NIOWorkerThread-5:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:26   zookeeper_node_2: 2019-10-24 21:56:26,178 [myid:2] -
> WARN  [NIOWorkerThread-5:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:26   zookeeper_node_1: 2019-10-24 21:56:26,329 [myid:1] -
> WARN  [NIOWorkerThread-1:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:26   zookeeper_node_3: 2019-10-24 21:56:26,484 [myid:3] -
> WARN  [NIOWorkerThread-3:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:26   zookeeper_node_2: 2019-10-24 21:56:26,792 [myid:2] -
> WARN  [NIOWorkerThread-4:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:26   zookeeper_node_3: 2019-10-24 21:56:26,890 [myid:3] -
> WARN  [NIOWorkerThread-7:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:26   zookeeper_node_1: 2019-10-24 21:56:26,888 [myid:1] -
> WARN  [NIOWorkerThread-2:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:27   zookeeper_node_2: 2019-10-24 21:56:27,347 [myid:2] -
> WARN  [NIOWorkerThread-7:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:27   zookeeper_node_1: 2019-10-24 21:56:27,354 [myid:1] -
> WARN  [NIOWorkerThread-4:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:27   zookeeper_node_3: 2019-10-24 21:56:27,662 [myid:3] -
> WARN  [NIOWorkerThread-2:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:27   zookeeper_node_3: 2019-10-24 21:56:27,810 [myid:3] -
> WARN  [NIOWorkerThread-6:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:27   zookeeper_node_1: 2019-10-24 21:56:27,811 [myid:1] -
> WARN  [NIOWorkerThread-2:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:27   zookeeper_node_2: 2019-10-24 21:56:27,816 [myid:2] -
> WARN  [NIOWorkerThread-2:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:28   zookeeper_node_2: 2019-10-24 21:56:28,366 [myid:2] -
> WARN  [NIOWorkerThread-6:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
> Oct 25 10:56:28   zookeeper_node_1: 2019-10-24 21:56:28,474 [myid:1] -
> WARN  [NIOWorkerThread-6:NIOServerCnxn@370] - Exception causing close of
> session 0x0: null
>
> A quick search didn't return anything, but my guess is that it might
> have to do with the upgrade from 3.4.14 and maybe old stuff remaining?
>
> So any idea for what to check or do would be greatly appreciated.
>
> Thanks
>
> Sebastian
>
>
> --
> DISCLAIMER
> This email contains information that is confidential and which
> may be
> legally privileged. If you have received this email in error please
>
> notify the sender immediately and delete the email.
> This email is intended
> solely for the use of the intended recipient and you may not use or
> disclose this email in any way.
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message