[
https://issues.apache.org/jira/browse/CASSANDRA-14865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16673356#comment-16673356
]
Jeff Jirsa edited comment on CASSANDRA-14865 at 11/2/18 4:36 PM:
-----------------------------------------------------------------
Sounds a tiny bit like CASSANDRA-11340 , without the thread issue.
was (Author: jjirsa):
Sounds like CASSANDRA-11340
> Cascading calls to read retries, system_auth, and read repairs
> --------------------------------------------------------------
>
> Key: CASSANDRA-14865
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14865
> Project: Cassandra
> Issue Type: Bug
> Reporter: Pedro Gordo
> Priority: Major
> Fix For: 3.11.1
>
> Attachments: cn_dc.txt, nec_dc.txt, wec_dc.txt
>
>
> Roles validity and permission cache values are the default ones. Same thing
> for the read-repair chance.
> We have a cluster with 3 data centers. We have noticed that in 2 of the data
> centers (NEC and CN) we have multiple calls to speculative read retries
> (rapid read protection), roles (instead of using cached values within the
> same tracing session), and multiple read repair messages.
> We would expect calls to roles, within sequential read sessions, because the
> cache could be turned, but not so many calls within the same tracing session.
> Same thing for read-retries, and read repair messages. We are discarding
> blocking read repairs possibility because we consistently get the same
> results when doing the query several times.
> It feels like something is cascading calls to these mechanisms regardless of
> conditions that would prevent them from being called (cached roles values for
> instance).
> I have attached tracing files from the 3 data centers. Please let me know if
> more info is needed.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
