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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7619) tiny correction in the book
Date Fri, 18 Jan 2013 00:46:15 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13556823#comment-13556823
] 

Sergey Shelukhin commented on HBASE-7619:
-----------------------------------------

At least, "will be" started... :)
                
> tiny correction in the book
> ---------------------------
>
>                 Key: HBASE-7619
>                 URL: https://issues.apache.org/jira/browse/HBASE-7619
>             Project: HBase
>          Issue Type: Bug
>          Components: documentation
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>            Priority: Trivial
>         Attachments: HBASE-7619-v0.patch
>
>
> The following StoreFiles exist: 100, 25, 12, and 12 bytes apiece (oldest to newest).
With the above parameters, the files that would be selected for minor compaction are 23, 12,
and 12.
> Why?
>     100 --> No, because sum(25, 12, 12) * 1.0 = 47
>     25 --> No, because sum(12, 12) * 1.0 = 24
>     12 --> No. Candidate because sum(12) * 1.0 = 12, there are only 2 files to compact
and that is less than the threshold of 3
>     12 --> No. Candidate because the previous StoreFile was, but there are not enough
files to compact

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