ramyadass commented on issue #864:
URL:
https://github.com/apache/datafusion-comet/issues/864#issuecomment-2566140875
I get similar error when invoking with spark-shell. Tried below:
a) Uploaded the jar to hdfs:
hdfs:///home/hadoop/libraries/comet-spark-spark3.5_2.12-0.4.0.jar
and then executed below spark-shell command:
spark-shell --jars
hdfs:///home/hadoop/libraries/comet-spark-spark3.5_2.12-0.4.0.jar
b) Ran above command and verified class is loaded in driver, using below
code:
val clazz =
Class.forName("org.apache.spark.sql.comet.execution.shuffle.CometShuffleManager")
println(clazz)
c) ) Verified class is loaded in executor using below code:
val rdd = sc.parallelize(Seq(1), 1)
rdd.map { _ =>
val clazz =
Class.forName("org.apache.spark.sql.comet.execution.shuffle.CometShuffleManager")
s"Executor loaded class: $clazz"
}.collect().foreach(println)
d) When invoked with --conf spark.shuffle.manager, keep getting class not
found exception for CometShuffleManager
spark-shell --jars
hdfs:///home/hadoop/libraries/comet-spark-spark3.5_2.12-0.4.0.jar --conf
spark.driver.extraClassPath=hdfs:///home/hadoop/libraries/comet-spark-spark3.5_2.12-0.4.0.jar
--conf
spark.executor.extraClassPath=hdfs:///home/hadoop/libraries/comet-spark-spark3.5_2.12-0.4.0.jar
--conf
spark.shuffle.manager=org.apache.spark.sql.comet.execution.shuffle.CometShuffleManager
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