我使用以下命令来运行wordcount的spark java示例： -
time spark-submit --deploy-mode cluster --master spark://192.168.0.7:7077 --class org.apache.spark.examples.JavaWordCount /home/pi/Desktop/example/new/target/javaword.jar /books_500.txt
我已将同一个jar文件复制到同一位置的所有节点中。 （复制到HDFS对我来说没有用。）当我运行它时，输出如下： -
Running Spark using the REST application submission protocol.
16/07/14 16:32:18 INFO rest.RestSubmissionClient: Submitting a request to launch an application in spark://192.168.0.7:7077.
16/07/14 16:32:30 WARN rest.RestSubmissionClient: Unable to connect to server spark://192.168.0.7:7077.
Warning: Master endpoint spark://192.168.0.7:7077 was not a REST server. Falling back to legacy submission gateway instead.
16/07/14 16:32:30 WARN util.Utils: Your hostname, master02 resolves to a loopback address: 127.0.1.1; using 192.168.0.7 instead (on interface wlan0)
16/07/14 16:32:30 WARN util.Utils: Set SPARK_LOCAL_IP if you need to bind to another address
16/07/14 16:32:31 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
它停在那里，退出作业并等待终端上的下一个命令。没有错误信息我没有理解这个错误。请帮助...... !!