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https://issues.apache.org/jira/browse/CASSANDRA-6157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13866244#comment-13866244
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Jonathan Ellis edited comment on CASSANDRA-6157 at 1/9/14 3:10 AM:
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So... not to bikeshed myself, but what format should we use here?
I suggested
{code}
{'dc1', 'dc2'}
{code}
(python set literals, admittedly somewhat obscure), other options could be
{code}
['dc1', 'dc2']
{code}
(json list) or
{code}
"dc1,dc2"
{code}
(CDL). What we have here is
{code}
{dc1,dc2}
{code}
which is invalid just about everything. :)
Suggest just switching to CDL?
(I don't think we can have a YAML construct that can be "either a string, or a
yaml list" but I'm not an expert so I may be wrong on that point.)
P.S. We typically just use Config as a "raw values" dump and do extra parsing
in DatabaseDescriptor if necessary.
was (Author: jbellis):
So... not to bikeshed myself, but what format should we use here?
I suggested {{ {'dc1', 'dc2'} }} (python set literals, admittedly somewhat
obscure), other options could be {{ ['dc1', 'dc2'] }} (json list) or {{
"dc1,dc2" }} (CDL). What we have here is {{ {dc1,dc2} }} which is invalid just
about everything. :)
Suggest just switching to CDL?
(I don't think we can have a YAML construct that can be "either a string, or a
yaml list" but I'm not an expert so I may be wrong on that point.)
P.S. We typically just use Config as a "raw values" dump and do extra parsing
in DatabaseDescriptor if necessary.
> Selectively Disable hinted handoff for a data center
> ----------------------------------------------------
>
> Key: CASSANDRA-6157
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6157
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: sankalp kohli
> Assignee: sankalp kohli
> Priority: Minor
> Fix For: 2.0.5
>
> Attachments: trunk-6157-v2.diff, trunk-6157-v3.diff,
> trunk-6157-v4.diff, trunk-6157.txt
>
>
> Cassandra supports disabling the hints or reducing the window for hints.
> It would be helpful to have a switch which stops hints to a down data center
> but continue hints to other DCs.
> This is helpful during data center fail over as hints will put more
> unnecessary pressure on the DC taking double traffic. Also since now
> Cassandra is under reduced reduncany, we don't want to disable hints within
> the DC.
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