Version 1

    Summary

    On very large/busy instances, many requests to More Like This can slow the site down.

     

    Issue Details

    • Jira Issues:
      • JIVE-11968: Slow request generated from More Like This widget to getMoreLikeThisResultsByType

     

    Identifying the Problem

     

    Conditions

    1. Running a busy/large site

     

    Symptoms

    The access logs show many slow requests to /__services/v2/rest/morelikethis/2/

     

    Workaround

    We don't intend to make changes to core functionality for this issue, as it affects few sites.  Instead, if this issue shows up, we recommend making the following system property changes:

     

    search.mlt.minWordLen = 5

    search.mlt.minTermFreq = 4

    search.mlt.minDocFreq = 5

     

    Note: Applying these properties will require a restart to take effect.