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  1. DSpace
  2. DS-3846

Remove solr optimize (-o) commands from "Scheduled Tasks via Cron" page

    Details

    • Type: Improvement
    • Status: Closed (View Workflow)
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None
    • Attachments:
      0
    • Comments:
      2
    • Documentation Status:
      Needed

      Description

      As also discussed in the comments of:

      https://wiki.duraspace.org/display/DSDOC6x/Scheduled+Tasks+via+Cron 

      Optimize (-o) shouldn't be executed on a regular (& automated basis). 

      In a larger DSpace instance, executing optimize on a larger SOLR core, while your DSpace is serving production traffic, can lead to downtime. Optimize puts the core in read-only, so accumulating stats or edit requests potentially keep DB connections open and might exhaust your DB pool while optimize is running.

      Optimize also has a substantial disk space impact: when optimize is running you temporarily need 2x the space of your SOLR core, as the optimized one is being built as a duplicate. Until the new one is completely finished, the old one stays on disk, hence you're in the situation where you temporarily need twice the disk space.

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            • Assignee:
              Unassigned
              Reporter:
              bram Bram Luyten (Atmire)
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              • Created:
                Updated:
                Resolved: