remove O(n^2) slow slow indexing defaults in DataImportHandler
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Key: SOLR-3142
URL: https://issues.apache.org/jira/browse/SOLR-3142
Project: Solr
Issue Type: Bug
Reporter: Robert Muir
Assignee: Robert Muir
Fix For: 3.6, 4.0
By default, dataimporthandler optimizes the entire index when it commits.
This is bad for performance, because it means by default its doing a very
heavy index-wide operation even for an incremental update... essentially
O(n^2) indexing.
All that is needed is to set optimize=false by default. If someone wants
to optimize, they can either set optimize=true or explicitly optimize
themselves.
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