MySQL Forums
Forum List  »  NDB clusters

Re: NDB engine possibly not a realtime database engine?
Posted by: Stefan Auweiler
Date: March 17, 2017 01:49AM

Thanks for the reply, Mikael
we'll try to log and tweak NTP, to catch this.

How could I prove that this is coming from the OS?
Is there a call 'give me CPU' which is not answered for a while?
Is the log message a 100% prove of this?

Customer is really complaining about real time capabilities here.

We never noticed this message
2017-03-16 11:10:59 [ndbd] WARNING -- Ndb kernel thread 10 is stuck in: Job Handling elapsed=6336
on two systems in parallel.

If the one node doesn't respond within ms (as usual) why is the other nod of the node group not delivering instead?

BTW: we did not see this in Solaris 10 with NDB 7.3.7 but had to change binaries do go to Solaris 11, so we went to NDB 7.4.9.
Have there been any changes in this area?


Options: ReplyQuote

Written By
Re: NDB engine possibly not a realtime database engine?
March 17, 2017 01:49AM

Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.