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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2009/06/24 20:20:07 UTC

[jira] Resolved: (HBASE-1577) Move memcache to ConcurrentSkipListMap from ConcurrentSkipListSet

     [ https://issues.apache.org/jira/browse/HBASE-1577?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack resolved HBASE-1577.
--------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

Committed with a special value Object named NULL that is private to Memcache.

> Move memcache to ConcurrentSkipListMap from ConcurrentSkipListSet
> -----------------------------------------------------------------
>
>                 Key: HBASE-1577
>                 URL: https://issues.apache.org/jira/browse/HBASE-1577
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: stack
>             Fix For: 0.20.0
>
>         Attachments: 1577-v2.patch, set2map.patch
>
>
> The CSLM will replace old entry with a new when you put.  The CSLS will NOT replace if existent key making for a test, and if present, remove semantic which to be safe needs synchronizing (Replacement is a Ryan Rawson suggestion).

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