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https://issues.apache.org/jira/browse/CASSANDRA-11302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15179524#comment-15179524
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Sylvain Lebresne commented on CASSANDRA-11302:
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Definitively looks fishy but since you're the author, can you have a quick look
[~aweisberg]?
> Invalid time unit conversion causing write timeouts
> ---------------------------------------------------
>
> Key: CASSANDRA-11302
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11302
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Mike Heffner
> Attachments: nanosec.patch
>
>
> We've been debugging a write timeout that we saw after upgrading from the
> 2.0.x release line, with our particular workload. Details of that process can
> be found in this thread:
> https://www.mail-archive.com/user@cassandra.apache.org/msg46064.html
> After bisecting various patch release versions, and then commits, on the
> 2.1.x release line we've identified version 2.1.5 and this commit as the
> point where the timeouts first start appearing:
> https://github.com/apache/cassandra/commit/828496492c51d7437b690999205ecc941f41a0a9
> After examining the commit we believe this line was a typo:
> https://github.com/apache/cassandra/commit/828496492c51d7437b690999205ecc941f41a0a9#diff-c7ef124561c4cde1c906f28ad3883a88L467
> as it doesn't properly convert the timeout value from milliseconds to
> nanoseconds.
> After testing with the attached patch applied, we do not see timeouts on
> version 2.1.5 nor against 2.2.5 when we bring the patch forward. While we've
> tested our workload against this and we are fairly confident in the patch, we
> are not experts with the code base so we would prefer additional review.
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