[jira] [Resolved] (CASSANDRA-3881) reduce computational complexity of processing topology changes

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-3881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis resolved CASSANDRA-3881.
---------------------------------------

       Resolution: Fixed
    Fix Version/s: 1.2
         Reviewer: jbellis  (was: scode)

thanks, committed!
                
> reduce computational complexity of processing topology changes
> --------------------------------------------------------------
>
>                 Key: CASSANDRA-3881
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3881
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Peter Schuller
>            Assignee: Sam Overton
>              Labels: vnodes
>             Fix For: 1.2
>
>
> This constitutes follow-up work from CASSANDRA-3831 where a partial improvement was committed, but the fundamental issue was not fixed. The maximum "practical" cluster size was significantly improved, but further work is expected to be necessary as cluster sizes grow.
> _Edit0: Appended patch information._
> h3. Patches
> ||Compare||Raw diff||Description||
> |[00_snitch_topology|https://github.com/acunu/cassandra/compare/refs/top-bases/p/3881/00_snitch_topology...p/3881/00_snitch_topology]|[00_snitch_topology.patch|https://github.com/acunu/cassandra/compare/refs/top-bases/p/3881/00_snitch_topology...p/3881/00_snitch_topology.diff]|Adds some functionality to TokenMetadata to track which endpoints and racks exist in a DC.|
> |[01_calc_natural_endpoints|https://github.com/acunu/cassandra/compare/refs/top-bases/p/3881/01_calc_natural_endpoints...p/3881/01_calc_natural_endpoints]|[01_calc_natural_endpoints.patch|https://github.com/acunu/cassandra/compare/refs/top-bases/p/3881/01_calc_natural_endpoints...p/3881/01_calc_natural_endpoints.diff]|Rewritten O(logN) implementation of calculateNaturalEndpoints using the topology information from the tokenMetadata.|
> ----
> _Note: These are branches managed with TopGit. If you are applying the patch output manually, you will either need to filter the TopGit metadata files (i.e. {{wget -O - <url> | filterdiff -x*.topdeps -x*.topmsg | patch -p1}}), or remove them afterward ({{rm .topmsg .topdeps}})._

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira