we have spark 2.4.x clusters running fine; however when running spark 3.1.1 the spark history server fails to boot
note: we build spark 3.1.1 from source for hadoop 3.2.1 we use supervisord to start services so our start command is: $SPARK_HOME/bin/spark-class org.apache.spark.deploy.history.HistoryServer Error: A JNI error occurred, please check your installation and try again Expectation in thread "main" java.lang.NoClassDefFoundError: scala/MatchError ... caused by: java.lang.ClassNotFoundException: scala.MatchError ... is there a different HistorySever class for spark 3 using scala 2.12 ?
