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From "Vijay (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4554) Log when a node is down longer than the hint window and we stop saving hints
Date Thu, 10 Jan 2013 04:56:12 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13549356#comment-13549356
] 

Vijay commented on CASSANDRA-4554:
----------------------------------

{quote}
I've just attached a patch that I had been working on initially (with just the additional
JMX call)
{quote}
The problem with the attached patch is that, every hint past window will result in a System
table read.
                
> Log when a node is down longer than the hint window and we stop saving hints
> ----------------------------------------------------------------------------
>
>                 Key: CASSANDRA-4554
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4554
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Jonathan Ellis
>            Assignee: Vijay
>            Priority: Minor
>             Fix For: 1.2.2
>
>         Attachments: 0001-CASSANDRA-4554-add-hint-metrics.patch, 0001-CASSANDRA-4554-logging-to-system-table-v2.patch,
0002-CASSANDRA-4554-logging-to-system-table.patch, 4554.patch
>
>
> We know that we need to repair whenever we lose a node or disk permanently (since it
may have had undelivered hints on it), but without exposing this we don't know when nodes
stop saving hints for a temporarily dead node, unless we're paying very close attention to
external monitoring.

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