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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 Wed, 23 Mar 2016 03:37:25 GMT

    [ https://issues.apache.org/jira/browse/SOLR-8856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15207828#comment-15207828
] 

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

Commit 574da7667f571e0c9e0527b14e9dec14415200f6 in lucene-solr's branch refs/heads/master
from markrmiller
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=574da76 ]

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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