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From "Tommaso Teofili (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-7924) Reduce Lucene index size footprint with compressing Codec
Date Wed, 19 Dec 2018 13:18:00 GMT

    [ https://issues.apache.org/jira/browse/OAK-7924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16724992#comment-16724992
] 

Tommaso Teofili commented on OAK-7924:
--------------------------------------

bq. I assume you recommend using merge policy "mitigated" and coded "compressingCodec"?

for space optimisation, yes.

bq. I assume this isn't the default yet, but it can be set in the index definition (the coded,
and the merge policy)?

exactly, they're not default (yet), they can be set in the index definition (_mergePolicy
= mitigated_ , _codec = compressingCodec_)

> Reduce Lucene index size footprint with compressing Codec
> ---------------------------------------------------------
>
>                 Key: OAK-7924
>                 URL: https://issues.apache.org/jira/browse/OAK-7924
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: lucene
>            Reporter: Tommaso Teofili
>            Assignee: Tommaso Teofili
>            Priority: Major
>             Fix For: 1.9.14
>
>         Attachments: OAK-7924.0.patch
>
>
> In OAK-5192 I had developed a test codec to benchmark all possible space savings options
before diving into a custom {{MergePolicy}}.
> The codec developed back then could be used to reduce the index size footprint both on
disk and on node store implementations.



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