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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-8856) Do not cache merge or 'read once' contexts in the hdfs block cache.
Date Fri, 01 Apr 2016 14:27:25 GMT

    [ https://issues.apache.org/jira/browse/SOLR-8856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15221759#comment-15221759
] 

ASF subversion and git services commented on SOLR-8856:
-------------------------------------------------------

Commit 461c9b4fef5c173c96ac2aa68daa87ef2bed2c16 in lucene-solr's branch refs/heads/branch_6x
from markrmiller
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=461c9b4 ]

SOLR-8856: Do not cache merge or 'read once' contexts in the hdfs block cache.


> 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
>         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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