Hi,
For the record, in case someone else run into the same problem: after
adding a bit more processing logic into a javascript mapper my
mapreduce jobs started generating flow_timeout errors like these:
=ERROR REPORT==== 27-Apr-2010::16:36:30 ===
** State machine <0.321.0> terminating
** Last message in was flow_timeout
** When State == executing
** Data == {state,27732273,
[<0.324.0>,<0.323.0>,<0.322.0>],
<0.90.0>,66000,
{1272400589779374,#Ref<0.0.0.773>},
[]}
** Reason for termination =
** flow_timeout
The problem was solved by cranking the number of javascript vms
"js_vm_count" from 8 to 16 in the etc/app.config file. This is with
Riak 0.9.1.
I'd suggest, if possible, to try to generate a slightly more
insightful error message when this happens.
Thanks,
Colin
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