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https://issues.apache.org/jira/browse/LUCENE-3725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13195108#comment-13195108
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Uwe Schindler commented on LUCENE-3725:
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Mike: This his somehow opposite to the last comment:
bq. I only turned packing on for one thing: the Kuromoji FST (shrank by 14%,
272 KB).
vs.:
bq. I turned off packing for Kuromoji, since the JAR actually got larger
(despite FST getting smaller)... strange.
What's going on? Does this mean the FST and the TokenInfoDict$fst.dat file was
smaller, but the resulting JAR file bigger - can be a gzip compression problem?
I can only repeat Simon: https://www.destroyallsoftware.com/talks/wat ;-)
As you wanted to enable this because of Kumoroji and now don't use it at all,
is there any use-case in Lucene using the compaction?
I am just confused!
P.S.: Does this change FST file format again?
> Add optional packing to FST building
> ------------------------------------
>
> Key: LUCENE-3725
> URL: https://issues.apache.org/jira/browse/LUCENE-3725
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/FSTs
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 3.6, 4.0
>
> Attachments: LUCENE-3725.patch, LUCENE-3725.patch
>
>
> The FSTs produced by Builder can be further shrunk if you are willing
> to spend highish transient RAM to do so... our Builder today tries
> hard not to use much RAM (and has options to tweak down the RAM usage,
> in exchange for somewhat lager FST), even when building immense FSTs.
> But for apps that can afford highish transient RAM to get a smaller
> net FST, I think we should offer packing.
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