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From "Thomas Pan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-8817) Enhance The Apache HBase Reference Guide
Date Fri, 28 Jun 2013 07:25:20 GMT
Thomas Pan created HBASE-8817:
---------------------------------

             Summary: 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


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 9.7.6.1, 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 2.3.1.1 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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