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From Lance Norskog <>
Subject Re: Solr Delta index questions
Date Sat, 12 Jun 2010 01:52:03 GMT
The delta import operation adds more records to the index, so the
index gets bigger.

Any index will be a little disorganized after the indexing pass. The
'optimize' operation collapses the "messy" index into a "clean" one.
You can try running an optimize once a day until you learn more about
operating a Solr instance.


On Thu, Jun 10, 2010 at 3:20 PM, Honglin Li <> wrote:
> Hi, all,
> Assuming my data is in a RDB, and I conduct a full index first, then a delta
> index every couple of hours. I have the following questions:
> * Once a delta index is generated, will it get merged with the full index?
> * Do I still need to generate the full index once a while in order to
> improve performance? Say, once a day.
>  I am saying that a clean full index might be better than one full merged
> with many delta index.
> Thanks,
> Honglin
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Lance Norskog

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