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https://issues.apache.org/jira/browse/SOLR-7510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14533997#comment-14533997
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Shalin Shekhar Mangar commented on SOLR-7510:
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This will help shard splitting as well. If we can index the hash value for a
routing key, shard splitting can automatically compute hash ranges such that
the documents are evenly distributed. But apart from what you've mentioned,
it'd need to extract the routing key from a composite id.
> UpdateProcessor to compute a murmur3 hash of a field at index time
> ------------------------------------------------------------------
>
> Key: SOLR-7510
> URL: https://issues.apache.org/jira/browse/SOLR-7510
> Project: Solr
> Issue Type: Sub-task
> Reporter: Hoss Man
>
> SOLR-6968 is adding HyperLogLog support to stats component. HLL accuracy
> depends on having good (long) hash values -- these can be computed at query
> time, but we should give users a simple option to compute them at index time
> for efficiency (especially with things like String hashing)
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