[book] book.xml - minor correction of compaction algorithm (example #1)
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Key: HBASE-5389
URL: https://issues.apache.org/jira/browse/HBASE-5389
Project: HBase
Issue Type: Improvement
Reporter: Doug Meil
Assignee: Doug Meil
Priority: Minor
Attachments: book_hbase_5389.xml.patch
Nicholas pointed this out to me. The "what" was correct in all cases for
example #1, but two of the "whys" weren't correct:
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Slight modification to the book. In 8.7.5.5.2
* 100 --> No, because sum(50, 23, 12, 12) * 1.0 = 97.
* 50 --> No, because sum(23, 12, 12) * 1.0 = 47.
* 23 --> Yes, because sum(12, 12) * 1.0 = 24.
* 12 --> Yes, because sum(12) * 1.0 = 12.
* 12 --> Yes, because the previous file had been included, and this is
included because this does not exceed the the max-file limit of 5.
[12,12] are include solely because an older/larger file is included: 23.
The compaction algorithm itself stops after noticing that 23 should be
included. Sum(12) * 1.0 >= 12 isn't done at all
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Correcting explanation of the last 2 files on why they were selected for minor
compaction.
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