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From "Jim Witschey (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-10864) Dropped mutations high until cluster restart
Date Mon, 21 Dec 2015 16:48:46 GMT


Jim Witschey commented on CASSANDRA-10864:


you mentioned that you were going to look at commitlog behavior. Did you get any new information
from that? And were you able to watch {{ttop}} at all, as described here:

[~yukim] This seems to be related to, or at least effecting, repair. Could you have a look
at the email thread and see if you can tell what the issue is?

> Dropped mutations high until cluster restart
> --------------------------------------------
>                 Key: CASSANDRA-10864
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jeff Ferland
> Originally raised and investigated in
> Cause is still unclear, but a rolling restart has on two occasions since been performed
to cope with dropped mutations and timed-out reads.
> Pattern is indicative of some kind of code quality issue possibly involving locking operations.
Stack flame graphs do not show a clear difference between restarts.

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