I deploy a test stand for server app demo for clients. Riak 1.2.0 on debian
compiled and run with erlang 15b01. Client uses riak erlang protobuf client
1.2. I have to use only one node with almost default config. For storage
backend I use eleveldb_backend (we use second indexing very often). After
several dais of mostly standby wiating (demo application showed once in day or
two) riak server start dropping connections (erlang pb client is not notified
and show that connection is ok). I look at riak log and find that entries:
2012-09-20 00:10:10.976 [error] <0.803.0>@riak_core_vnode:handle_info:510
296867520082839655260123481645494988367611297792 riak_kv_vnode worker pool
crashed
{timeout,{gen_server,call,[<0.819.0>,{work,<0.806.0>,{fold,#Fun,#Fun},{raw,59205031,<0.28969.11>}}]}}
2012-09-20 00:10:10.976 [error] <0.862.0>@riak_core_vnode:handle_info:510
365375409332725729550921208179070754913983135744 riak_kv_vnode worker pool
crashed
{timeout,{gen_fsm,sync_send_event,[<0.866.0>,{checkout,false,5000},5000]}}
...
2012-09-20 00:17:14.234 [error] <0.1645.0> CRASH REPORT Process <0.1645.0> with
0 neighbours exited with reason:
{timeout,{gen_fsm,sync_send_event,[<0.1646.0>,{checkout,false,5000},5000]}} in
gen_fsm:terminate/7 line 611 2012-09-20 00:17:14.639 [error]
<0.2337.0>@riak_api_pb_server:handle_info:171 Unrecognized message
{pipe_log,#Ref<0.0.17.19772>,index,{trace,[error],{vnode,{fitting_died,1118962191081472546749696200048404186924073353216}}}}
2012-09-20 00:17:15.106 [error] <0.1596.0> gen_fsm <0.1596.0> in state ready
terminated with reason:
{timeout,{gen_fsm,sync_send_event,[<0.1597.0>,{checkout,false,5000},5000]}}
If client make request it gets {error, disconnected}. If we try reconnect it
successfully connected and work.
What should I change in config file or tune client connection to make it work
stable? I fully understand that ring is good and haproxy can check nodes(and
maybe break connection in this case), but I have only one node for riak on demo
server and haproxy is not installed. Can you advise something?
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