[jira] [Created] (CASSANDRA-15777) All test targets to set jvm arg "java.io.tmpdir" according to ${tmp.dir}

["Michael Semb Wever (Jira)" <ji...@apache.org>]

Michael Semb Wever created CASSANDRA-15777:
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             Summary: All test targets to set jvm arg "java.io.tmpdir" according to ${tmp.dir}
                 Key: CASSANDRA-15777
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15777
             Project: Cassandra
          Issue Type: Bug
          Components: Build, Test/unit
            Reporter: Michael Semb Wever
            Assignee: Michael Semb Wever


Make all test targets declare the temp directory (java.io.tmpdir) as defined by tmp.dir

This was originally done in CASSANDRA-7712 but has been eroded over time as the test targets evolved.

The attached patch moves the 
{code}<jvmarg value="-Djava.io.tmpdir=${tmp.dir}"/>{code}
into the {{testmacrohelper}} macrodef.

Like CASSANDRA-7712, jenkins agents are filling up their root volumes because of what's left behind under {{"/tmp"}}

The build scripts have already been configured to define the temp directory to be within the jenkins job's workspace: https://github.com/apache/cassandra-builds/commit/33ba1e30ea196180f7d70f8e6ec47fdf6844f3f6#diff-91876f5f158ec50dab9a70cc06c06922



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