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From "Jason Rutherglen (JIRA)" <j...@apache.org>
Subject [jira] Created: (SOLR-1495) Store UnInvertedField on disk
Date Tue, 06 Oct 2009 18:19:34 GMT
Store UnInvertedField on disk
-----------------------------

                 Key: SOLR-1495
                 URL: https://issues.apache.org/jira/browse/SOLR-1495
             Project: Solr
          Issue Type: Improvement
          Components: search
    Affects Versions: 1.3, 1.4
            Reporter: Jason Rutherglen
            Priority: Minor
             Fix For: 1.5


There are a couple of reasons for this, NRT and avoiding OOMs.
Users who don't know, easily run into OOMs when generating
facets on fields with numerous terms.  

Creating the UIF on disk prior to making use of it means the
user may know upfront the memory cost of their faceting
operation (as opposed to after which leads to OOMs and
unexpected behavior).

For NRT it means amortizing the cost of creating UIFs into
segment creation, as opposed to creating them dynamically as
queries arrive.  

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