[jira] [Resolved] (CASSANDRA-3141) SSTableSimpleUnsortedWriter call to ColumnFamily.serializedSize iterate through the whole columns

["Sylvain Lebresne (Resolved) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-3141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sylvain Lebresne resolved CASSANDRA-3141.
-----------------------------------------

       Resolution: Not A Problem
    Fix Version/s:     (was: 0.8.8)

Ok, closing this for now. If someone has evidence there is a real need for optimization here he can reopen.
                
> SSTableSimpleUnsortedWriter call to ColumnFamily.serializedSize iterate through the whole columns
> -------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-3141
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3141
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.8.3
>            Reporter: Benoit Perroud
>            Priority: Minor
>         Attachments: CachedSizeCF.patch
>
>
> Every time newRow is called, serializedSize iterate through all the columns to compute the size.
> Once 1'000'000 columns exist in the CF, it becomes painfull to do at every iteration the same computation. Caching the size and incrementing when a Column is added could be an option.

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