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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-10052) use HDFS advisory caching to avoid caching HFiles that are not going to be read again (because they are being compacted)
Date Wed, 27 Nov 2013 21:00:35 GMT
Colin Patrick McCabe created HBASE-10052:
--------------------------------------------

             Summary: use HDFS advisory caching to avoid caching HFiles that are not going
to be read again (because they are being compacted)
                 Key: HBASE-10052
                 URL: https://issues.apache.org/jira/browse/HBASE-10052
             Project: HBase
          Issue Type: Improvement
            Reporter: Colin Patrick McCabe


HBase can benefit from doing dropbehind during compaction since compacted files are not read
again.  HDFS advisory caching, introduced in HDFS-4817, can help here.  The right API here
is {{DataOutputStream#setDropBehind}}.



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