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From "Vishal Sharda (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DISPATCH-358) Intermittent crashes in qdrouterd under load from parallel senders
Date Tue, 07 Jun 2016 05:27:21 GMT

    [ https://issues.apache.org/jira/browse/DISPATCH-358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15317880#comment-15317880

Vishal Sharda commented on DISPATCH-358:


Yes, I am able to reproduce the crash without SSL also and filed another bug DISPATCH-360
for the same.  I am working on refining my Java client (it currently does SSL always).  Until
then you can use the drivers.tar.gz from DISPATCH-343 against the three routers connected
insecurely as per the config files in DISPATCH-360.

You will see the issues with the following very basic test:

$ ./recv_no_ssl -n 1 amqp://<host1>:<port1>/paypal/foo

Separate terminal:

$ ./send_no_ssl -m 4 -n 1 amqp://<host1>:<port1>/paypal/foo

Be sure to have host3 connected to the two hosts as described and run the test several times.
 (It will work occasionally and fail most of the times).

Then run again with host3 removed.  (It will work almost always.)

> Intermittent crashes in qdrouterd under load from parallel senders
> ------------------------------------------------------------------
>                 Key: DISPATCH-358
>                 URL: https://issues.apache.org/jira/browse/DISPATCH-358
>             Project: Qpid Dispatch
>          Issue Type: Bug
>          Components: Routing Engine
>    Affects Versions: 0.6.0
>         Environment: Debian 8.3, Apache Qpid Proton 0.12.2 for drivers and dependencies,
Hardware: 2 CPUs, 15 GB RAM, 60 GB HDD on 2 separate machines
>            Reporter: Vishal Sharda
>            Priority: Critical
>         Attachments: Crash_Java_Send.png, Crash_Java_free_qd_connection.png, Crash_SASL.png,
Crash_SASL_2.png, Crash_SR_1.png, Crash_SR_2.png, Crash_free.png, Crash_sasl_server_done.png
> In my setup of two inter-connected routers, several senders connecting to one router
while few receivers connecting to the other router, I see several crashes in the router to
which senders connect.  These crashes are intermittent and happen once in every 10 runs or
so.  I have collected the backtraces of all the crashes but do not yet have a test case that
can reliably reproduce any of them.

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