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From "Amitanand Aiyer (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-4346) Optimise the storage that we use for storing MVCC information.
Date Thu, 17 Nov 2011 23:35:51 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4346?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amitanand Aiyer resolved HBASE-4346.
------------------------------------

    Resolution: Fixed
      Assignee: Amitanand Aiyer

fix included in 2856-v6.txt
                
> Optimise the storage that we use for storing MVCC information.
> --------------------------------------------------------------
>
>                 Key: HBASE-4346
>                 URL: https://issues.apache.org/jira/browse/HBASE-4346
>             Project: HBase
>          Issue Type: Sub-task
>         Environment: Writing the memstoreTS information is critical to ensuring Atomic
semantics. However, it adds a storage overhead to the disk files. 
> This information is useful only when there is a "concurrent" read operation that needs
to ignore a particular key-value. 
> Once it is known that a key-value is going to be included in all current and future read
operations, MVCC memstoreTS information is
> of no use anymore. 
> We can optimize for storage on disk, by getting rid of these values during later compactions.

>            Reporter: Amitanand Aiyer
>            Assignee: Amitanand Aiyer
>            Priority: Minor
>             Fix For: 0.94.0
>
>


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