Hi,
We're quite new to Sequoia but were able to setup a dual controller conf
running through Appia sync without too much trouble.
The setup is dual controller, each running two DB backends (MySQL). The
conf is RAIDb-1. We were unable to have appia communicate with anything
else than "UDP p2p TOKEN Channel". TCP channels did not connect (we have
a strange setup for ethernet controllers, involving vlans and such).
As long as the system is used with slow rate (a couple per second)
INSERT queries, it works quite well. When we launch 50 threads, each
running 100 INSERT queries, the controllers stops seeing each other at
some point. Log from one controller :
16:39:50,909 DEBUG continuent.hedera.adapters Replying to
Member(address=/192.168.0.27:12000, uid=192.168.0.27:12000) for message 1616
16:39:50,913 INFO controller.virtualdatabase.sequoia
Member(address=/192.168.0.27:12000, uid=192.168.0.27:12000) see
members:[Member(address=/81.19.18.26:12000, uid=81.19.18.26:12000),
Member(address=/192.168.0.27:12000, uid=192.168.0.27:12000)] and has
mapping:{Member(address=/192.168.0.27:12000,
uid=192.168.0.27:12000)=sequoia02.testplatform.com:1090}
16:39:50,918 DEBUG continuent.hedera.gms Appia reported block()
16:40:04,466 DEBUG continuent.hedera.gms Appia reported new view:
version: 1
group: [Group:sequoia]
id: [ViewID:4;[AppiaHedera@/192.168.0.27:12000]]
previous: [[ViewID:3;[AppiaHedera@/81.19.18.26:12000]],]
view: [[AppiaHedera@/192.168.0.27:12000],]
addresses: [/192.168.0.27:12000,]
16:40:04,467 INFO continuent.hedera.gms
Member(address=/81.19.18.26:12000, uid=81.19.18.26:12000) failed in
Group(gid=sequoia)
16:40:04,469 INFO controller.virtualdatabase.sequoia 25 requests were
waiting responses from Member(address=/81.19.18.26:12000,
uid=81.19.18.26:12000)
16:40:04,469 DEBUG continuent.hedera.adapters Received reply from
Member(address=/192.168.0.27:12000, uid=192.168.0.27:12000) to message 1610
16:40:04,470 DEBUG continuent.hedera.adapters Received reply from
Member(address=/192.168.0.27:12000, uid=192.168.0.27:12000) to message 1611
16:40:04,470 WARN controller.RequestManager.sequoia 1 controller(s)
died during execution of request 562949953422915
16:40:04,471 WARN controller.RequestManager.sequoia Controller
Member(address=/192.168.0.26:12000, uid=192.168.0.26:12000) is suspected
of failure.
16:40:04,471 WARN controller.RequestManager.sequoia 1 controller(s)
died during execution of request 562949953422916
16:40:04,471 WARN controller.RequestManager.sequoia Controller
Member(address=/192.168.0.26:12000, uid=192.168.0.26:12000) is suspected
of failure.
16:40:04,471 WARN controller.RequestManager.sequoia 1 controller(s)
died during execution of request 562949953422917
I must say the sequoia controllers run on small virtual test systems
with very low CPU capabilities.
Any help appreciated to sort this out.
Regards,
Sylvain.
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