[jira] [Updated] (HBASE-10052) use HDFS advisory caching to avoid caching HFiles that are not going to be read again (because they are being compacted)

[Andrew Purtell (JIRA)]

     [ 
https://issues.apache.org/jira/browse/HBASE-10052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Andrew Purtell updated HBASE-10052:
-----------------------------------

    Fix Version/s:     (was: 0.98.1)
                   0.98.2
         Assignee:     (was: Andrew Purtell)

> 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
>            Priority: Minor
>             Fix For: 0.99.0, 0.98.2
>
>
> 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 {{DataInputStream#setDropBehind}}.



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