Andrey: It's waiting for 60 seconds, literally...
See https://github.com/basho/riak_core/search?utf8=%E2%9C%93&q=vnode_inactivity_timeout - handoff is not initiated until a vnode has been inactive for the specified inactivity period. For demonstration purposes, if you want to reduce this time, you could set the riak_core.vnode_inactivity_timeout period lower ,which can be set in advanced.config. Also note that, depending on the backend you use, it's possible to have other settings set lower than the vnode inactivity timeout, you can actually prevent handoff completely - see http://docs.basho.com/riak/kv/2.2.0/setup/planning/backend/bitcask/#sync-strategy, for examnple. Hope this helps. Doug On Thu, Feb 23, 2017 at 6:40 AM Andrey Ershov <andrers...@gmail.com> wrote: Hi, guys! I'd like to follow up on handoffs behaviour after netsplit. The problem is that right after network partition is healed, "riak-admin transfers" command says that there are X partitions waiting transfer from one node to another, and Y partitions waiting transfer in the opposite direction. What are they waiting for? Active transfers section is always empty. It takes about 1 minute for transfer to occur. I've increased transfer_limit to 100 and it does not help. Also I've tried to attach to Erlang VM and execute riak_core_vnode_manager:force_handoff() on each node. This command returns 'ok'. But seems that it does not work right after network is healed. After some time 30-60 s, force_handoff() works as expected, but actually it's the same latency as in auto handoff case. So what is it waiting for? Any ideas? I'm preparing real-time coding demo to be shown on the conference. So it's too much time to wait for 1 minute for handoff to occur just for a couple of keys... -- Thanks, Andrey _______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
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