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From "Stefania (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-12664) GCCompactionTest is flaky
Date Mon, 19 Sep 2016 02:27:21 GMT
Stefania created CASSANDRA-12664:
------------------------------------

             Summary: GCCompactionTest is flaky
                 Key: CASSANDRA-12664
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12664
             Project: Cassandra
          Issue Type: Bug
          Components: Local Write-Read Paths
            Reporter: Stefania
            Priority: Minor
             Fix For: 3.x


{{GCCompactionTest}} was introduced by CASSANDRA-7019 and appears to be flaky, see for example
[here|https://cassci.datastax.com/view/Dev/view/sbtourist/job/sbtourist-CASSANDRA-9318-trunk-testall/lastCompletedBuild/testReport/org.apache.cassandra.cql3/GcCompactionTest/testGcCompactionStatic/].


I think it's the same root cause as CASSANDRA-12282: the tables in the test keyspace are dropped
asynchronously after each test, and this might cause additional flush operations for all dirty
tables in the keyspace. See the [callstack|https://issues.apache.org/jira/browse/CASSANDRA-12282?focusedCommentId=15399098&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15399098]
in 12282. 

A possible solution is to use KEYSPACE_PER_TEST, which is instead dropped synchronously.



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