Urgent help needed on UpdateHandler configuration

[Rekha Sekhar]

Hi,

The application has *2 solr (v 8.4.1)* and *3 Zookeeper (v3.6.2) *running
in SolrCloud mode.

we are indexing 4million records with hardcommit as 120 sec and softcommit
as 15 sec.
Unfortunately, it is taking lot of time and the stats given below for
reference.

Kindly help us and let know what would be the rootcause  for this slowness
and please help to resolve the same.

Thank you!!!

*For Node1*

   - UPDATE.updateHandler.rollbacks.count:0
   - UPDATE.updateHandler.autoCommits:222
   - UPDATE.updateHandler.softAutoCommits:1570
   - UPDATE.updateHandler.commits.count:1793
   - UPDATE.updateHandler.deletesByQuery:0
   - UPDATE.updateHandler.softAutoCommitMaxTime:15000ms
   - UPDATE.updateHandler.cumulativeAdds.count:5489533
   - UPDATE.updateHandler.deletesById:1986
   - UPDATE.updateHandler.cumulativeDeletesById.count:2937412
   - UPDATE.updateHandler.optimizes.count:0
   - UPDATE.updateHandler.cumulativeErrors.count:0
   - UPDATE.updateHandler.expungeDeletes.count:0
   - UPDATE.updateHandler.autoCommitMaxTime:120000ms
   - UPDATE.updateHandler.splits.count:0
   - UPDATE.updateHandler.merges.count:0
   - UPDATE.updateHandler.docsPending:26658
   - UPDATE.updateHandler.errors:0
   - UPDATE.updateHandler.cumulativeDeletesByQuery.count:94931
   - UPDATE.updateHandler.adds:7520

   *For Node 2*


   - UPDATE.updateHandler.rollbacks.count:0
      - UPDATE.updateHandler.autoCommits:221
      - UPDATE.updateHandler.softAutoCommits:1563
      - UPDATE.updateHandler.commits.count:1786
      - UPDATE.updateHandler.deletesByQuery:0
      - UPDATE.updateHandler.softAutoCommitMaxTime:15000ms
      - UPDATE.updateHandler.cumulativeAdds.count:5411628
      - UPDATE.updateHandler.deletesById:500
      - UPDATE.updateHandler.cumulativeDeletesById.count:2917754
      - UPDATE.updateHandler.optimizes.count:0
      - UPDATE.updateHandler.cumulativeErrors.count:0
      - UPDATE.updateHandler.expungeDeletes.count:0
      - UPDATE.updateHandler.autoCommitMaxTime:120000ms
      - UPDATE.updateHandler.splits.count:0
      - UPDATE.updateHandler.merges.count:0
      - UPDATE.updateHandler.docsPending:12266
      - UPDATE.updateHandler.errors:0
      - UPDATE.updateHandler.cumulativeDeletesByQuery.count:94931
      - UPDATE.updateHandler.adds:1700

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