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From Lance Norskog <goks...@gmail.com>
Subject Re: Here a merge thread, there a merge thread ...
Date Sun, 26 Feb 2012 00:04:42 GMT
Solr uses TieredMergeScheduler by default now. You might find this
works more smoothly.

On Fri, Feb 24, 2012 at 10:03 AM, Benson Margulies
<bimargulies@gmail.com> wrote:
> On Fri, Feb 24, 2012 at 10:59 AM, Michael McCandless
> <lucene@mikemccandless.com> wrote:
>> This is from ConcurrentMergeScheduler (the default MergeScheduler).
>>
>> But, are you sure the threads are sleeping, not exiting?  (They should
>> be exiting).
>>
>> This merge scheduler starts a new thread when a merge is needed,
>> allows that thread to do another merge (if one is immediately
>> available), else the thread exits.
>
> They seem to exit eventually, but not quite as soon as they arrive.
>
>
>>
>> Mike McCandless
>>
>> http://blog.mikemccandless.com
>>
>> On Sun, Feb 19, 2012 at 9:05 PM, Benson Margulies <bimargulies@gmail.com> wrote:
>>> A long-running program of mine (which Uwe's read a model of) slowly
>>> keeps adding merge threads. I count 22 at the moment. Each one shows
>>> up, runs for a bit, and then goes to sleep for, seemingly ever. I
>>> don't do anything explicit to control merging behavior.
>>>
>>> They name themselves "Lucene Merge Thread #xxx" where xxx is a
>>> non-contiguous but ever-growing number.
>>>
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-- 
Lance Norskog
goksron@gmail.com

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