You are viewing a plain text version of this content. The canonical link for it is here.

Posted to commits@cassandra.apache.org by "Benoit Perroud (JIRA)" <ji...@apache.org> on 2011/09/05 22:31:10 UTC

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

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

Benoit Perroud updated CASSANDRA-3141:
--------------------------------------

    Attachment: CachedSizeCF.patch

PoC for CF computing serialized size when adding a new Column instead of computing it everytimes CF.serializedSize is called

> 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.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira