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Commit tuning
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:Author:   Paul Borgermans
:Version: 1.0 draft
:Revision: $Rev: 4329 $
:Date: $Date: 2009-12-10 12:03:39 +0100 (Thu, 10 Dec 2009) $

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.. NOTE : for a better reading experience, convert me to HTML with rst2html.

Introduction
============

Since Solr 1.4, some enhancements on how commits are performed were added on top of
the existing "commit after N docs" and "commit after X secs since previous commit"
configuration parameters in solrconf.xml

Some customers with high write rates and considerable search volumes currently
experience a kind of race conditions when several commits are issued while Solr
is refreshing its IndexReader structures.

The idea is to add the commitWithin parameters with <add> commands and also to
provide better support for the existing "delaying" commit features in Solr


Related issues
==============

Premium customer issue via public tracker
http://issues.ez.no/IssueView.php?Id=15931&activeItem=1

Implementation
==============

Provide more ini configuration parameters and extend API's to support all
Solr commit parameters

ezfind.ini

[IndexOptions]
## If true, another mechanism must be enabled to do commits: cronjob,
# solrconf.xml or by giving CommitWithin a positive value (expressed in milliseconds)
DisableDirectCommits=false (default)
## If set to a positive value will add those delays with every addObject call
# if set to 0 (default), it will be ignored
CommitWithin=0 (default)