今天稍微没那么忙了,趁着这个时间,准备把spark的启动过程总结一下(),分享给大家.现在使用的spark1.4.1版本 当然前提是你已经把spark环境搭建好了. 1.我们启动spark的时候一般会使用官方提供的启动脚本,start-all.sh ,那我们先来看看,这个脚本做了什么. # Start all spark daemons. # Starts the master on this node. # Starts a worker on each node specified in c…
1.修改拷贝/root/spark-1.5.1-bin-hadoop2.6/conf下面spark-env.sh.template到spark-env.sh,并添加设置HADOOP_CONF_DIR: # Options read when launching programs locally with # ./bin/run-example or ./bin/spark-submit # - HADOOP_CONF_DIR, to point Spark towards Hadoop conf…
下面是我在spark user list的求助贴,很快就得到了正确回答,有遇到问题的同学解决不了也可以去上面提问. I can use it under spark1.4.1,but error on spark1.5.1,how to deal with this problem? //define Schema val struct =StructType( StructField("app_name", StringType, true):: StructField("…
欢迎经验交流!本文Blog地址:http://www.cnblogs.com/fesh/p/3866791.html Apache Spark a fast and general engine for large-scale data processing Spark是一个高效的分布式计算系统,相比Hadoop,它在性能上比Hadoop要高100倍.Spark是发源于美国加州大学伯克利分校AMPLab的集群计算平台,它克服了MapReduce在迭代式计算和交互式计算方面的不足,通过引入RD…
错误信息如下: 5/11/03 16:48:15 INFO spark.SparkContext: Running Spark version 1.4.1 15/11/03 16:48:15 WARN spark.SparkConf: In Spark 1.0 and later spark.local.dir will be overridden by the value set by the cluster manager (via SPARK_LOCAL_DIRS in mesos/sta…