Bret McGuire created CASSJAVA-94:
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Summary: Be smarter about which Java version we use for ccm
Key: CASSJAVA-94
URL: https://issues.apache.org/jira/browse/CASSJAVA-94
Project: Apache Cassandra Java driver
Issue Type: Improvement
Reporter: Bret McGuire
Issue was discovered and raised by [~aratnofsky] in conversation... I'm just
documenting the problem. :)
Current build passes the JVM version to use for integration testing (think ccm)
[via Maven
params|https://github.com/apache/cassandra-java-driver/blob/4.19.0/pom.xml#L957-L980]
which ultimately make their way into args to [the Surefire
plugin|https://github.com/apache/cassandra-java-driver/blob/4.19.0/pom.xml#L732].
The test infrastructure then uses CcmBridge to actually execute ccm. In a
few cases CcmBridge overrides the Java version used by ccm via [the
"--jvm-version" CLI
arg|https://github.com/apache/cassandra-java-driver/blob/4.19.0/test-infra/src/main/java/com/datastax/oss/driver/api/testinfra/ccm/CcmBridge.java#L329-L332]
but these conditions are pretty limited; they're mainly used for various DSE
versions as of this writing.
Absent this config ccm will just use whatever is set in the env vars... and
this falls back to what's passed in via Surefire. But that lands us with some
awkward mismatches for various Cassandra version/JVM version combinations:
{noformat}
21:21:39.050 [Exec Stream Pumper] ERROR c.d.o.d.api.testinfra.ccm.CcmBridge -
ccmerr> 21:21:39,50 ccm WARNING node1: The current Java 21 is not supported by
Cassandra 4.0.17 (supported versions: [8, 11]).
{noformat}
We should specify a fixed JVM version to use for a given version of ccm and
pass this information explicitly via CcmBridge in most (all?) cases. This will
allow us to vary the JVM version used for the tests themselves without having
to worry about whether they introduce a compat problem with Cassandra.
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