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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-11610) Revisit consistent range movement restrictions
Date Tue, 19 Apr 2016 18:59:25 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-11610?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams updated CASSANDRA-11610:
-----------------------------------------
    Description: 
I have a suspicion that we chose the wrong default by always having this on, with a flag to
disable.  We ran for a very long time without it, and at most a handful of people cared, with
very few complaints.  Now that we have this on, the majority who didn't care before but want
to double even fairly small clusters now have to add a flag to disable it, and then are curious
why they need to.

Regardless of that, I think we need to at least make the restriction more lax; we currently
block the simultaneous addition of nodes across the entire cluster, even they use NTS and
have many DCs with different RF settings.  We should at least allow simultaneous addition
in multiple DCs.

  was:
I have a suspicion that we chose the wrong default by always having this on, with a flag to
disable.  We ran for a very long time without it out, and at most a handful of people cared,
with very few complaints.  Now that we have this on, the majority who didn't care but want
to double even fairly small clusters have to add a flag to disable it, and then are curious
why they need to.

Regardless of that, I think we need to at least make the restriction more lax; we currently
block the simultaneous addition of nodes across the entire cluster, even they use NTS and
have many DCs with different RF settings.  We should at least allow simultaneous addition
in multiple DCs.


> Revisit consistent range movement restrictions
> ----------------------------------------------
>
>                 Key: CASSANDRA-11610
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11610
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Brandon Williams
>
> I have a suspicion that we chose the wrong default by always having this on, with a flag
to disable.  We ran for a very long time without it, and at most a handful of people cared,
with very few complaints.  Now that we have this on, the majority who didn't care before but
want to double even fairly small clusters now have to add a flag to disable it, and then are
curious why they need to.
> Regardless of that, I think we need to at least make the restriction more lax; we currently
block the simultaneous addition of nodes across the entire cluster, even they use NTS and
have many DCs with different RF settings.  We should at least allow simultaneous addition
in multiple DCs.



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