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spark中split()�Ҏ��W�号"." "|" "*" "\" "]"

Ke — Wed, 18 Apr 2018 03:15:00 GMT

关于点的问题是用string.split("[.]") 解决�?/p>

关于竖线的问题用 string.split("\\|")解决�?/p>

关于星号的问题用 string.split("\\*")解决�?/p>

关于斜线的问题用 sring.split("\\\\")解决�?/p>

关于中括��L��问题�?sring.split("\\[\\]")解决�?br />

Ke 2018-04-18 11:15 发表评论

windows下��用IDEA开�?spark SQL例子报IllegalArgumentException: java.net.URISyntaxException: Relative path in absolute URI

Ke — Wed, 21 Mar 2018 03:31:00 GMT


public class FirstSparkSql {
    public static void main(String[] args) {


        String masterMode = "local";//spark://master:7077

 SparkConf conf = new SparkConf();
 //conf.set("spark.executor.memory", "1024m");
 conf.setAppName("First Spark SQL");
 conf.setMaster(masterMode);
//解决异常�Q?/span>IllegalArgumentException: java.net.URISyntaxException: Relative path in absolute URI
 conf.set("spark.sql.warehouse.dir","D:\\temp_files");

 JavaSparkContext sc = new JavaSparkContext(conf);
 
 SparkSession spark = SparkSession.builder().config(conf).getOrCreate();
 Dataset df = spark.read().json("hdfs://master:9000/user/spark/input/persons.txt");
 df.show();
 sc.stop();
 }
}

Ke 2018-03-21 11:31 发表评论

Spark错误�Q�TaskSchedulerImpl: Initial job has not accepted any resources

Ke — Mon, 12 Mar 2018 10:09:00 GMT

在windows环境下��用Intellij idea�q�程执行spark�E�序�Ӟ��遇到了以下问题：

Intellij控制台输��告：WARN TaskSchedulerImpl: Initial job has not accepted any resources; check your cluster UI to ensure that workers are registered and have sufficient resources

此时�E�序会一直loading�Q�running�Q�loading�Q�running…的��@环，�q�持�l�出��C��面的警告�?nbsp;
出现�q�个错误可能有几�U�原因：

host配置不正��?/li>
worker内存不��
相关端口可��占用

针对�W�二�U�原因，通过修改配置文�g中worker和master使用内存资源的参数即可解冟�?nbsp;
针对�W�三�U�原因，可以查看占用端口的程序�ƈ��其关闭�Q�或者重启spark集群�?/p>

解决�Ҏ��Q?nbsp;

1. 修改本机hosts文�g�Q�在修改�W�一行，��d��自己的hostName�Q�如�Q?br />
127.0.0.1 bob-PC

2.在spark集群的所有节点的hosts中添加本地提交�Q务的windows节点的ip和hostname�Q�如�Q?br />
192.168.189.19 bob-PC

Ke 2018-03-12 18:09 发表评论

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spark中split()�Ҏ���W�号"." "|" "*" "\" "]"

windows下��用IDEA开�?spark SQL例子报IllegalArgumentException: java.net.URISyntaxException: Relative path in absolute URI

Spark错误�Q�TaskSchedulerImpl: Initial job has not accepted any resources

spark中split()�Ҏ��W�号"." "|" "*" "\" "]"