feat: Document the class path / classloader issue with the shuffle ma… #595

Job	Run time
ubuntu-latest/java 8-spark-3.2/java	46m 39s
ubuntu-latest/java 8-spark-3.4/rust	5m 30s
ubuntu-latest/java 8-spark-3.3/java	47m 25s
ubuntu-latest/java 8-spark-3.4/java	46m 0s
ubuntu-latest/java 11-spark-3.3/java	46m 23s
ubuntu-latest/java 11-spark-3.4/rust	5m 50s
macos-14(Silicon)/java 8-spark-3.2/java	29m 54s
ubuntu-latest/java 11-spark-3.4/java	45m 54s
macos-14(Silicon)/java 8-spark-3.4/rust	4m 21s
macos-14(Silicon)/java 17-spark-3.3/java	31m 30s
ubuntu-latest/java 17-spark-3.4/rust	5m 41s
ubuntu-latest/java 17-spark-3.3/java	46m 8s
macos-14(Silicon)/java 8-spark-3.4/java	32m 10s
macos-13/java 8-spark-3.4/rust	7m 42s
ubuntu-latest/java 17-spark-3.4/java	46m 10s
macos-13/java 8-spark-3.4/java	59m 56s
macos-14(Silicon)/java 11-spark-3.4/rust	4m 21s
macos-13/java 11-spark-3.4/rust	7m 44s
macos-14(Silicon)/java 11-spark-3.4/java	39m 56s
macos-13/java 11-spark-3.4/java	1h 5m 15s
macos-14(Silicon)/java 17-spark-3.4/rust	4m 21s
macos-13/java 17-spark-3.4/rust	7m 49s
macos-14(Silicon)/java 17-spark-3.4/java	31m 26s
macos-13/java 17-spark-3.4/java	58m 58s
	12h 7m 3s

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