Awesome! :) I'd appreciate it if you'd be able to sign off the patch in Bugzilla.

--Ere

Aleisha Amohia kirjoitti 3.5.2021 klo 0.10:
Thank you for turning this around so quickly Ere, I backported the fix
to our 20.05.x site and it's working well!

Aleisha

On 30/04/21 7:02 pm, Ere Maijala wrote:
Hi,

I think we're just doing it wrong. The problem is that with
authorities there's a single SQL query that fetches a record set that
includes the marcxml records. Do that for 600 000 records and it use
quite a bit of memory. For biblios the record set only contains
biblionumbers, and the actual metadata is fetched one-by-one. That's
better but still not great.

What we should be doing is fetch n records (e.g. with n=1000) at a
time, ordered by id. Then each round fetch the next set starting from
id > [last fetched id]. This is basicly what I did in bug 27584 to
improve the OAI-PMH provider performance.

I've created bug 28268 about this. I'll post a patch that you could
try soon.

Best,
Ere

Aleisha Amohia kirjoitti 30.4.2021 klo 0.13:
Hi Alvaro

Thank you for responding! I did try lowering the batch commit but it
doesn't appear to even get to the part where it starts processing
records. I think it gets stuck on fetching the records.

Aleisha

On 30/04/21 3:39 am, Alvaro Cornejo wrote:
Hi Aleisha

Have you tried to lower the batch commit?

see 
https://perldoc.koha-community.org/misc/search_tools/rebuild_elasticsearch.html

<https://perldoc.koha-community.org/misc/search_tools/rebuild_elasticsearch.html>


Regards,

Alvaro



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Le mer. 28 avr. 2021 à 23:52, Aleisha Amohia <[email protected]
<mailto:[email protected]>> a écrit :

      Hi all,

      We have a site with around 600,000 authority records and have
enabled
      elasticsearch. Reindexing and searching has worked easily for
biblios
      (there are just over 10,000 biblios) but fails for authorities.

      $ sudo koha-elasticsearch --rebuild -d -a -v <instance>
      [19024] Checking state of authorities index
      [19024] Dropping and recreating authorities index
      [19024] Indexing authorities

      And then it just hangs there for ages until the server runs out of
      memory and dies.

      We're running ES 6.x on Koha 20.05.x.

      I tried running the script directly and specifying an authid
and that
      worked as expected.

      $ perl /usr/share/koha/bin/search_tools/rebuild_elasticsearch.pl
      <http://rebuild_elasticsearch.pl> -a -d
      -v -ai 2135575
      [17684] Checking state of authorities index
      [17684] Dropping and recreating authorities index
      [17684] Indexing authorities
      [17684] Committing final records...
      [17684] Total 1 records indexed

      It feels like this is happening because we have too many authority
      records. Is there a way to fix this? Has anyone come across this
      before?

      Thanks!

      --
      *Aleisha Amohia*(she/her)
      _______________________________________________

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--
Ere Maijala
Kansalliskirjasto / The National Library of Finland
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