執行spark examples報錯:java
Using Spark's default log4j profile: org/apache/spark/log4j-defaults.properties 18/05/25 11:09:45 INFO SparkContext: Running Spark version 2.1.1 18/05/25 11:09:45 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 18/05/25 11:09:45 ERROR SparkContext: Error initializing SparkContext. org.apache.spark.SparkException: A master URL must be set in your configuration at org.apache.spark.SparkContext.<init>(SparkContext.scala:379) at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2320) at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:868) at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:860) at scala.Option.getOrElse(Option.scala:121) at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:860) at org.apache.spark.examples.graphx.AggregateMessagesExample$.main(AggregateMessagesExample.scala:42) at org.apache.spark.examples.graphx.AggregateMessagesExample.main(AggregateMessagesExample.scala) 18/05/25 11:09:45 INFO SparkContext: Successfully stopped SparkContext Exception in thread "main" org.apache.spark.SparkException: A master URL must be set in your configuration at org.apache.spark.SparkContext.<init>(SparkContext.scala:379) at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2320) at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:868) at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:860) at scala.Option.getOrElse(Option.scala:121) at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:860) at org.apache.spark.examples.graphx.AggregateMessagesExample$.main(AggregateMessagesExample.scala:42) at org.apache.spark.examples.graphx.AggregateMessagesExample.main(AggregateMessagesExample.scala) Process finished with exit code 1
解決方法:在啓動vm裏添加參數sql
-Dspark.master=local