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From Paul Davis <>
Subject Re: Long running task status monitoring
Date Fri, 23 Jan 2009 17:26:18 GMT
On Fri, Jan 23, 2009 at 5:20 AM, Robert Dionne <> wrote:
> This is very cool, I'll check it out.
> After a build with yesterday's changes I started seeing these exceptions
> again:
> This was fixed (#213) a few days ago. I lowered max_open_databases on my
> machine to 50 and it still occurs. It only occurs once when running the
> tests from Futon, which all pass. However when running the tests standalone
> from the runner script, you'll see two or three. Running these requires the
> patch I submitted to couch_js.c
> I'll try to run this down (no pun intended :)

My guess is that those are erlang-ism errors. As in, they're
notifications that a gen_server was forcibly killed and then it exited
with a status other than normal. I tried adding a conditional block to
couch_file.erl that just printed a single line that the gen_server was
exiting forcefully and then exited normally to see if that would
alleviate the problem but I still seemed to be getting them. I still
think that's the right part of the code to be looking at though.

Paul Davis

> Bob
> On Jan 22, 2009, at 11:18 PM, Damien Katz wrote:
>> I just checked in code to allow the checking of the status of long running
>> tasks, like view indexes and compaction.
>> During a long view build or compaction, if you want to see the status of
>> what's happening, simply GET _active_tasks and you'll get back a list of
>> JSON objects describing the currently running tasks.
>> Example results while 2 tasks are running:
>> [{"type":"Database Compaction","task":"speed","status":"Copied 10001 of
>> 39001 changes (25%)","pid":"<0.78.0>"},
>> {"type":"View Group Indexer","task":"speed
>> _design/test","status":"Processed 0 of 39001 changes
>> (0%)","pid":"<0.91.0>"}]
>> We should probably add task tracking code for replication as well.
>> -Damien

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