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https://issues.apache.org/jira/browse/SOLR-8856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Miller resolved SOLR-8856.
-------------------------------
       Resolution: Fixed
    Fix Version/s: 6.1
                   master

> Do not cache merge or 'read once' contexts in the hdfs block cache.
> -------------------------------------------------------------------
>
>                 Key: SOLR-8856
>                 URL: https://issues.apache.org/jira/browse/SOLR-8856
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Mark Miller
>            Assignee: Mark Miller
>             Fix For: master, 6.1
>
>         Attachments: SOLR-8856.patch, SOLR-8856.patch, SOLR-8856.patch
>
>
> Generally the block cache will not be large enough to contain the whole index 
> and merges can thrash the cache for queries. Even if we still look in the 
> cache, we should not populate it.



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