How to optimize Oak Lucene indexes to reduce indexing time

Description

Optimize the AEM Oak lucene indexes to reduce reindexing time.


Environment


AEM 6.0 + Oak 1.0.16 or later AEM 6.1 and AEM 6.2

Resolution

You can optimize the Oak Lucene indexes by fine tuning the oak: QueryIndexDefinition with properties such as “includedPaths”, “excludedPaths”, “name” and “indexPath”.

• “includedPaths” and “excludedPaths” properties restrict what paths the index traverses when reindexing and which paths it listens to for index updates.
• “name” and “indexPath” properties make index logs easier to understand as it would tag the log messages with the path or name of the index.  For example:

Steps to optimize the indexes:

1. Go to http://aem-host:port/crx/de/index.jsp and log in as admin
2. Browse to /oak:index
3. Add the properties highlighted below 1 to the corresponding indexes.  The includedPaths and excludedPaths properties should be multi-value String ( String )
4. Click “Save All” in CRXDe

1 /oak:index property modifications