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From "Pushkar Raste (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-9506) cache IndexFingerprint for each segment
Date Fri, 07 Oct 2016 20:21:20 GMT

    [ https://issues.apache.org/jira/browse/SOLR-9506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15556139#comment-15556139
] 

Pushkar Raste commented on SOLR-9506:
-------------------------------------

I computed hash w/o regard to deleted docs and cached it. All the tests are passing even without
doing steps #2 and #3. I also verified that index fingerprint computed on entire index matches
to that of fingerprint computed on from individual segments (even after deletions).

> cache IndexFingerprint for each segment
> ---------------------------------------
>
>                 Key: SOLR-9506
>                 URL: https://issues.apache.org/jira/browse/SOLR-9506
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Noble Paul
>         Attachments: SOLR-9506.patch, SOLR-9506.patch, SOLR-9506_POC.patch
>
>
> The IndexFingerprint is cached per index searcher. it is quite useless during high throughput
indexing. If the fingerprint is cached per segment it will make it vastly more efficient to
compute the fingerprint



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