lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Erick Erickson <>
Subject Re: timing merges
Date Thu, 12 Jun 2014 14:39:33 GMT
What version of Solr/Lucene? Merging is supposed to be
happening in the background for quite a while, so I'd be surprised if this
was really the culprit unless you're on an older version of Lucene.


But this is exactly what I mean. You say "I have users complaining about it".
How do _they_ know that merging is the reason? Have _they_ presented
you with evidence? I can't tell you how many times I've been asked to
implement a solution to a problem that turned out to have nothing
to do with the issue; someone was just "sure" they knew the reason....

If you're on an older version and you'd get way more
benefits (not only with indexing) by upgrading...


On Thu, Jun 12, 2014 at 7:12 AM, Jamie <> wrote:
> Erick
> Well, I have users complaining about it. They say indexing stops for a long
> time.
> Currently, the following settings are applied.
> TieredMergePolicy logMergePolicy = new TieredMergePolicy();
> logMergePolicy.setSegmentsPerTier(1000);
>  conf.setMergePolicy(logMergePolicy);
> What's a good way to resolve this?
> Regards
> Jamie
> On 2014/06/12, 4:04 PM, Erick Erickson wrote:
>> Michael is, of course, the Master of Merges...
>> I have to ask, though, have you demonstrated to your satisfaction that
>> you're actually seeing a problem? And that fewer merges would actually
>> address that problem?
>> 'cause this might be an "XY" problem....
>> Best,
> ---------------------------------------------------------------------
> To unsubscribe, e-mail:
> For additional commands, e-mail:

To unsubscribe, e-mail:
For additional commands, e-mail:

View raw message