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https://issues.apache.org/jira/browse/OAK-9790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17554621#comment-17554621
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Thomas Mueller commented on OAK-9790:
-------------------------------------
https://github.com/apache/jackrabbit-oak/pull/587
> Implement parallel indexing for speeding up oak run indexing command
> --------------------------------------------------------------------
>
> Key: OAK-9790
> URL: https://issues.apache.org/jira/browse/OAK-9790
> Project: Jackrabbit Oak
> Issue Type: Story
> Reporter: Jun Zhang
> Priority: Major
>
> Implement parallel indexing for speeding up oak run indexing command
> Since indexing was single threads, which is slow for large repository. In
> order to improve the indexing performance we need to implement parallel
> indexing.
> The work is cover for both lucene and elastic indexing. In order to support
> parallel indexing, it need to split the big flat file store file ahead, which
> add a big overhead, but make parallel index possible and much faster.
> Another change together is support the LZ4 compression since which is much
> faster compare to gzip.
>
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