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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BLUR-5) Write through caching for the BlockCache
Date Fri, 12 Oct 2012 17:19:02 GMT

    [ https://issues.apache.org/jira/browse/BLUR-5?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475175#comment-13475175
] 

Doug Cutting commented on BLUR-5:
---------------------------------

The IOContext looks promising.  One might, e.g., always cache i/o that occurs in a READ or
FLUSH context, but only cache MERGE-related i/o when the estimatedMergeBytes is substantially
smaller than the cache size (to keep small merges in the cache).
                
> Write through caching for the BlockCache
> ----------------------------------------
>
>                 Key: BLUR-5
>                 URL: https://issues.apache.org/jira/browse/BLUR-5
>             Project: Apache Blur
>          Issue Type: Improvement
>            Reporter: Aaron McCurry
>
> This will allow for better NRT update performance because the writer will not have to
read the NRT segments from HDFS.

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