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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Reopened: (HBASE-1577) Move memcache to ConcurrentSkipListMap from ConcurrentSkipListSet
Date Wed, 24 Jun 2009 23:16:07 GMT

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

stack reopened HBASE-1577:
--------------------------


Reopening.  Should have tested before making change.  Doesn't work.  'replace' or 'put' will
not change key if 'equal'.  Will revert to Set and see what can do about it -- anything but
synchronizing all get/puts in memstore.

> 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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