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https://issues.apache.org/jira/browse/CASSANDRA-14915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16705028#comment-16705028
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Jon Meredith commented on CASSANDRA-14915:
------------------------------------------
I've confirmed the patch allows you to get beyond the initial error in the
description on Fedora 26 and complete an {{ant build}}. However, it still
requires ant-junit to be installed to get any of the test targets to complete
(which are needed for {{jar}}/{{package}} targets).
Is this what you were hoping to achieve, or did you also expect the unit tests
to be able to run with just {{ant}} and {{java-1.8.0-openjdk-devel}} installed?
An alternative would be to be more explicit about which dependencies are needed
to build on Fedora in the docs.
> Handle ant-optional dependency
> ------------------------------
>
> Key: CASSANDRA-14915
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14915
> Project: Cassandra
> Issue Type: Bug
> Components: Build
> Reporter: Marcus Eriksson
> Assignee: Marcus Eriksson
> Priority: Major
> Fix For: 3.0.x, 3.11.x, 4.x
>
>
> CASSANDRA-13117 added a JUnit task which dumps threads on unit test timeout,
> and it depends on a class in {{org.apache.tools.ant.taskdefs.optional}} which
> seems to not always be present depending on how {{ant}} was installed. It can
> cause this error when building;
> {code:java}
> Throws: cassandra-trunk/build.xml:1134: taskdef A class needed by class
> org.krummas.junit.JStackJUnitTask cannot be found:
> org/apache/tools/ant/taskdefs/optional/junit/JUnitTask using the classloader
> AntClassLoader[/.../cassandra-trunk/lib/jstackjunit-0.0.1.jar]
> {code}
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