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From Erick Erickson <>
Subject Re: Optimize SolrCloud without downtime
Date Mon, 30 Mar 2015 21:42:26 GMT
Hmmm, are you indexing during the time you see the deleted docs not
changing? Because this is very strange. Theoretically, if you reindex
everything, that should result in segments that have _no_ live docs in
them and they should really disappear ASAP.

One way to work around this if we determine that this is a problem in
Solr might be to create a second collection and index to _that_, then
use collection aliasing to use the new index. But that's not


On Mon, Mar 30, 2015 at 4:35 AM, Pavel Hladik
<> wrote:
> Hi,
> thanks for reply. We have a lot of deleted docs cause we have to reindex all
> records from time to time, changing some important parameters.. When we do
> update, it means create and delete.
> Our deleted docs do not disappear by merging segments. I see our deleted
> docs are almost the same number after two weeks and always around 40
> segments. I ask our developers and they confirmed we use default settings
> for merging policy. Please, do you have some tips and tricks for efficient
> setting for merging segments?
> Our HW is RAID5 SAS disks and 40GB of memory dedicated for Solr.
> Regards,
> Pavel
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