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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-7975) Replace facets taxonomy writer "cache" with BytesRefHash based implementation
Date Tue, 03 Oct 2017 14:05:02 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-7975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16189743#comment-16189743
] 

ASF subversion and git services commented on LUCENE-7975:
---------------------------------------------------------

Commit 6cee162e195bb124cf77c7dc8b9e595cfb3e8a93 in lucene-solr's branch refs/heads/branch_7x
from Mike McCandless
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=6cee162 ]

LUCENE-7975: change the default taxonomy facets cache to a faster UTF-8 cache


> Replace facets taxonomy writer "cache" with BytesRefHash based implementation
> -----------------------------------------------------------------------------
>
>                 Key: LUCENE-7975
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7975
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 7.1, master (8.0)
>
>         Attachments: LUCENE-7975.patch, LUCENE-7975.patch
>
>
> When the facets module was first created we didn't have {{BytesRefHash}} and so the default
cache ({{Cl2oTaxonomyWriterCache}} was quite a bit more complex than needed.
> I changed this to use a {{BytesRefHash}}, which stores labels as UTF8 (reduces memory
for ascii-only usage), and is also faster (~12% overall speedup on indexing time in my private
tests).



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