Matthew Biscocho created SOLR-17756:
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Summary: Parallelize calculation of index fingerprint across
segments
Key: SOLR-17756
URL: https://issues.apache.org/jira/browse/SOLR-17756
Project: Solr
Issue Type: Improvement
Affects Versions: 9.8.1, 8.11.4, main (10.0)
Reporter: Matthew Biscocho
The index fingerprint is currently being calculated on each segment
sequentially. While this works fine, the index fingerprint calculation was
noticed to be a very slow process and on leader election is blocking.
This proposes to have this calculation parallelized across segments instead.
Since the fingerprint is just a cumulative sum of a hash on versions, the order
in which it is added to the running sum should not matter.
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