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Posted to issues@lucene.apache.org by "Michael McCandless (Jira)" <ji...@apache.org> on 2019/11/17 15:48:00 UTC
[jira] [Commented] (LUCENE-9049) Remove FST cachedRootArcs now
redundant with direct-addressing
[ https://issues.apache.org/jira/browse/LUCENE-9049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16976064#comment-16976064 ]
Michael McCandless commented on LUCENE-9049:
--------------------------------------------
This can also be a heap reduction for Lucene apps that create many fields, since those cached root arcs were allocated in heap, but the new direct-addressed arcs are now off-heap (usually?).
> Remove FST cachedRootArcs now redundant with direct-addressing
> --------------------------------------------------------------
>
> Key: LUCENE-9049
> URL: https://issues.apache.org/jira/browse/LUCENE-9049
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Bruno Roustant
> Priority: Major
>
> With LUCENE-8920 FST most often encodes top level nodes with direct-addressing (instead of array for binary search). This probably made the cachedRootArcs redundant. So they should be removed, and this will reduce the code.
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