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From "Jeff Jirsa (JIRA)" <>
Subject [jira] [Updated] (CASSANDRA-13764) SelectTest.testMixedTTLOnColumnsWide is flaky
Date Tue, 29 Aug 2017 22:54:00 GMT


Jeff Jirsa updated CASSANDRA-13764:
       Resolution: Fixed
         Reviewer: Joel Knighton
    Fix Version/s: 4.0
           Status: Resolved  (was: Ready to Commit)

Thanks Joel.

Committed to 3.0 as {{67ac1496cc9e7d9d15be28b9536e9cdbce42473d}} and merged to 3.11 and trunk
WITHOUT adding CHANGES.txt entry, because it's just a test fix and never hit a release (not
quite a ninja).

> SelectTest.testMixedTTLOnColumnsWide is flaky
> ---------------------------------------------
>                 Key: CASSANDRA-13764
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Testing
>            Reporter: Joel Knighton
>            Assignee: Jeff Jirsa
>            Priority: Trivial
>             Fix For: 3.0.15, 3.11.1, 4.0
> {{org.apache.cassandra.cql3.validation.operations.SelectTest.testMixedTTLOnColumnsWide}}
is flaky. This is because it inserts rows and then asserts their contents using {{ttl()}}
in the select, but if the test is sufficiently slow, the remaining ttl may change by the time
the select is run. Anecdotally, {{testSelectWithAlias}} in the same class uses a fudge factor
of 1 second that would fix all the failures I've seen, but it might make more sense to measure
the elapsed time in the test and calculate the acceptable variation from that time.

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