Ok, so now I can see in the "leaving" node logs:
2012-01-26 19:18:23.015 [info]
<0.32148.2873>@riak_core_handoff_sender:start_fold:39 Starting handoff of
partition riak_kv_vnode 685078892498860742907977265335757665463718379520
from '[email protected]' to '
[email protected]'
2012-01-26 19:24:17.798 [info] <0.31620.2873> alarm_handler:
{set,{system_memory_high_watermark,[]}}
2012-01-26 20:23:28.991 [info]
<0.32148.2873>@riak_core_handoff_sender:start_fold:87 Handoff of partition
riak_kv_vnode 685078892498860742907977265335757665463718379520 from '
[email protected]' to '
[email protected]' completed: sent 5110665 objects
in 3905.97 seconds

so things *are* moving but at a rate of 1308 records per second.
This sounds very slow to me, accounting for the small record size, the high
bw rate inside ec2 and practically 0% load on the servers

any thoughts?



On Thu, Jan 26, 2012 at 10:12 PM, Gal Barnea <[email protected]> wrote:

> Hi all
>
> I have a 6 server cluster running on ec2 (m1.large) - this is an
> evaluation environment, so practically no load besides the existing data
> (~200 million records, ~1k each)
>
> after running "riak-admin leave" on one of the node, I noticed that for
> more than 3 hours
> 1 - member_status showed that there is one "leaving" node and pending data
> to handoff on the rest but the numbers never changed
> 2 - riak-admin transfers -  showed handoffs waiting, but nothing changed
>
> at this point, I restarted the "leaving" node, so now the status is
> 1 - member_status - still stuck with the same numbers
> 2 - transfers - are slowly changing
>
> The leaving server's logs are showing that a single handoff started after
> the restart,but nothing since (roughly an hour ago)
>
> Interestingly, the leaving server is pretty idle while the remaining
> servers are working hard at 50%-60% cpu
>
> so, the question now is where should I dig around to try and understand
> what's going on. Any thoughts?
>
> Thanks
> Gal
>
>
>
>
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