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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6356) Proposal: Statistics.db (SSTableMetadata) format change
Date Fri, 22 Nov 2013 19:12:35 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13830241#comment-13830241
] 

Brandon Williams commented on CASSANDRA-6356:
---------------------------------------------

I kind of like that, in a pinch, you can use the DIGEST component by itself offline in shell
to validate your sstables and/or find corruption if need be.

> Proposal: Statistics.db (SSTableMetadata) format change
> -------------------------------------------------------
>
>                 Key: CASSANDRA-6356
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6356
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Yuki Morishita
>            Assignee: Yuki Morishita
>            Priority: Minor
>             Fix For: 2.1
>
>
> We started to distinguish what's loaded to heap, and what's not from Statistics.db. For
now, ancestors are loaded as they needed.
> Current serialization format is so adhoc that adding new metadata that are not permanently
hold onto memory is somewhat difficult and messy. I propose to change serialization format
so that a group of stats can be loaded as needed.



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