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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8817) Enhance The Apache HBase Reference Guide
Date Tue, 27 May 2014 02:05:02 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14009218#comment-14009218

Hadoop QA commented on HBASE-8817:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .
  ATTACHMENT ID: 12646830

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+0 tests included{color}.  The patch appears to be a documentation patch
that doesn't require tests.

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/9594//console

This message is automatically generated.

> Enhance The Apache HBase Reference Guide
> ----------------------------------------
>                 Key: HBASE-8817
>                 URL: https://issues.apache.org/jira/browse/HBASE-8817
>             Project: HBase
>          Issue Type: Bug
>          Components: documentation
>            Reporter: Thomas Pan
>            Assignee: Misty Stanley-Jones
>            Priority: Critical
>         Attachments: HBASE-8817.patch
> I am reading the guide here: http://hbase.apache.org/book.html#regions.arch
> I have noticed the following:
> - There is lack of coverage on scan. Note that Lars has a very good presentation from
last year's HBaseCon: http://www.slideshare.net/cloudera/3-learning-h-base-internals-lars-hofhansl-salesforce-final
> - Under section, there is no mentioning of flush per region if a memstore reached
the size threshold (and a possible flush of all memstores if over all memory usage of all
the memstores reached memstore.upperlimit). Note that people need to combine the information
provided in section 9 with section to fully understand the situation.
> - Compaction tuning strategies. Both Nicolas from Facebook and Sergey from Hortonworks
have presented various compaction algorithms. Sometime, once all the necessary code is in
master, we need to have the coverage.
> Let me know how I can help on the matter.

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