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From "Vladimir Rodionov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-14477) Compaction improvements: generational compaction
Date Thu, 24 Sep 2015 04:51:04 GMT
Vladimir Rodionov created HBASE-14477:
-----------------------------------------

             Summary: Compaction improvements: generational compaction
                 Key: HBASE-14477
                 URL: https://issues.apache.org/jira/browse/HBASE-14477
             Project: HBase
          Issue Type: New Feature
            Reporter: Vladimir Rodionov
            Assignee: Vladimir Rodionov
             Fix For: 2.0.0


For immutable and mostly immutable data the current SizeTiered-based compaction policy is
not efficient. 

# There is no need to compact all files into one, because, data is (mostly) immutable and
we do not need to collect garbage. (performance reason will be discussed later)
# Size-tiered compaction is not suitable for applications where most recent data is most important
and prevents efficient caching of this data. 



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