[
https://issues.apache.org/jira/browse/LUCENE-9815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17292426#comment-17292426
]
Robert Muir commented on LUCENE-9815:
-------------------------------------
Instead of adding more complexity/abstractions, I would like to see a PR that
just removes the compression option completely for Sorted term dictionaries.
Of course we compress the sorted term dictionaries. we were compressing them
always before too (with delta encoding etc). Now they just use a little LZ4 as
well. But there shouldn't be a config option around it, and then we don't need
sophisticated per-field stuff either.
> PerField formats can select the format based on FieldInfo
> ---------------------------------------------------------
>
> Key: LUCENE-9815
> URL: https://issues.apache.org/jira/browse/LUCENE-9815
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Bruno Roustant
> Priority: Minor
>
> PerFieldDocValuesFormat and PerFieldPostingsFormat currently only select the
> format based on the field name.
> If we improve them to also support the selection based on the FieldInfo, it
> will be possible to select based on some FieldInfo attribute, DocValuesType,
> etc.
> +Example use-case:+
> It will be possible to adapt the compression mode of doc values fields
> easily based on the DocValuesType. E.g. compressing sorted and not binary doc
> values.
> > User creates a new custom codec which provides a custom DocValuesFormat
> > which extends PerFieldDocValuesFormat and implements the method
> DocValuesFormat getDocValuesFormatForField(FieldInfo fieldInfo).
> This method provides either a standard Lucene80DocValuesFormat (no
> compression) or another new custom DocValuesFormat extending
> Lucene80DocValuesFormat with BEST_COMPRESSION mode.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For additional commands, e-mail: issues-h...@lucene.apache.org
