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From "T Jake Luciani (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7443) SSTable Pluggability v2
Date Mon, 04 Aug 2014 18:08:15 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14084999#comment-14084999
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T Jake Luciani commented on CASSANDRA-7443:
-------------------------------------------

One point to discuss is the upgrade path.  My vote is we should support a per node default
for the SSTable format (what's currently implemented),  
This way a user can take a node and upgrade it to the new format before going forward.  

When a user does set the format to the non-default it will end up incrementally upgrading
the sstables as they are compacted effectively the same as how the current sstable revisions
work. He/she could also run upgradesstables.

I think making it a per node setting makes sense for users who want to opt-in initally similar
to how we did vnodes and sstable compression.  Once the format is proved in battle tested
we can either change the default format or remove the setting altogether.



> SSTable Pluggability v2
> -----------------------
>
>                 Key: CASSANDRA-7443
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7443
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: T Jake Luciani
>            Assignee: T Jake Luciani
>             Fix For: 3.0
>
>
> As part of a wider effort to improve the performance of our storage engine we will need
to support basic pluggability of the SSTable reader/writer. We primarily need this to support
the current SSTable format and new SSTable format in the same version.  This will also let
us encapsulate the changes in a single layer vs forcing the whole engine to change at once.
> We previously discussed how to accomplish this in CASSANDRA-3067
>   



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