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https://issues.apache.org/jira/browse/CASSANDRA-18678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17744505#comment-17744505
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Jacek Lewandowski commented on CASSANDRA-18678:
-----------------------------------------------
cc [~mck] , [~brandonwilliams]
> CCM does not select Java version properly
> -----------------------------------------
>
> Key: CASSANDRA-18678
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18678
> Project: Cassandra
> Issue Type: Bug
> Components: CI
> Reporter: Jacek Lewandowski
> Assignee: Jacek Lewandowski
> Priority: Normal
>
> CASSANDRA-18106 added a new method to {{commons.py}}
> https://github.com/riptano/ccm/blob/master/ccmlib/common.py#L857 which is
> called when Cassandra version is >= 4.2
> {code:python}
> def get_supported_jdk_versions(install_dir):
> """
> Return the supported java versions from build.xml
> Only works in > 4.1
> """
> ...
> versions = ['8' if v == '1.8' else v for v in versions]
> ....
> {code}
> The problem is that this method returns a collection of strings, while later
> in {{commons.py}}:
> {code:python}
> ...
> if current_java_version in versions:
> jvm_version = current_java_version
> ...
> {code}
> the condition expects the collection to consists of ints and the condition
> fails.
> It is causing problems when you want to run the upgrade tests against Java 11
> because it always goes to the next branch of the condition which results in
> selecting the first supported version, which is 8.
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