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https://issues.apache.org/jira/browse/CASSANDRA-15543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17053733#comment-17053733
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Kevin Gallardo commented on CASSANDRA-15543:
--------------------------------------------
{{RequestFailureException}} uses the map's size to find out the number of
entries in it:
{code}
protected RequestFailureException(ExceptionCode code, ConsistencyLevel
consistency, int received, int blockFor, Map<InetAddressAndPort,
RequestFailureReason> failureReasonByEndpoint)
{
super(code, String.format("Operation failed - received %d responses and
%d failures: %s",
received,
failureReasonByEndpoint.size(),
buildFailureString(failureReasonByEndpoint)));
{code}
It does a copy of the map later in the constructor but I suppose there is still
a chance the content of the map may be different between the call to {{size()}}
and the entries when iterated in {{buildFailureString()}}.
> flaky test
> org.apache.cassandra.distributed.test.SimpleReadWriteTest.readWithSchemaDisagreement
> -----------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-15543
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15543
> Project: Cassandra
> Issue Type: Bug
> Components: Test/dtest
> Reporter: David Capwell
> Assignee: Kevin Gallardo
> Priority: Normal
> Fix For: 4.0-alpha
>
>
> This fails infrequently, last seen failure was on java 8
> {code}
> junit.framework.AssertionFailedError
> at
> org.apache.cassandra.distributed.test.DistributedReadWritePathTest.readWithSchemaDisagreement(DistributedReadWritePathTest.java:276)
> {code}
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