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When to rebuild index?

Discussion in 'Enhanced Search Support' started by duderuud, May 14, 2014.

  1. duderuud

    duderuud Active Member

    Can anyone tell me exactly when a rebuild is necessary?

    I'm asking because I'm busy converting to XF and we have a lot of posts (26mln).
    Rebuilding takes ages so I want to keep that to a minimum...
  2. Brogan

    Brogan XenForo Moderator Staff Member

    A rebuild after the import should be all that's required.
  3. Slavik

    Slavik XenForo Moderator Staff Member

    How much ram do you have in the server? If you have the hardware, you can increase the batch size to 10, 20 or even 30k for reindexing and it will fly through.

    I index p8ntballer with 10k batches and it does it in <5 minutes usually.
  4. RoldanLT

    RoldanLT Well-Known Member

    There's no command line to rebuild index?
  5. duderuud

    duderuud Active Member

    And what about after upgrading ES? Or change the stemming? Or another setting?

    The converter is running on a VM with 8GB of mem. The real thing will be running on 3 webservers with 16GB of mem.
    (We hope to swap the DB's for new ones with SSD's and 64 or 96GB of ram btw)

    Got any best practices there? Like a dedicated search server maybe?
  6. Brogan

    Brogan XenForo Moderator Staff Member

  7. duderuud

    duderuud Active Member

    Yeah ok, saw that :) But also after upgrading ES then?
    Just installed the beta.

    (PS. Rebuild just finished, took about 15 hours with the default settings)
  8. Brogan

    Brogan XenForo Moderator Staff Member

    There's no need to rebuild the index when upgrading ES as the indexed content doesn't change.
    The new options just change how it is retrieved.
  9. Rudy

    Rudy Well-Known Member

    I came here today to ask that very question. :) We had a couple of server hiccups over the past couple of months, and I want to rebuild the index overnight this weekend while traffic is down.

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