我想将处理后的 rdd 保存到 mysql 表中,因为我正在使用 SparkDataFrame 但我收到以下错误
py4j.protocol.Py4JJavaError: An error occurred while calling o216.jdbc.
: java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/student?user=root&password=root.
我将 mysql-jar 添加到 sparkshell
spark-shell --driver-class-path /path-to-mysql-jar/mysql-connectorjava-5.1.38-bin.jar。
from pyspark import SparkContext
from datetime import datetime
import os
import sys
from pyspark.sql import SQLContext, Row
sqlContext = SQLContext(sc)
file1 = sc.textFile("/home/hadoop/text1").cache()
file2 = sc.textFile("/home/hadoop/text2").cache()
file3 = file1.union(file2).coalesce(1).map(lambda line: line.split(','))
file1.unpersist()
file2.unpersist()
result = file3.map(lambda x: (x[0]+', '+x[1],float(x[2]))).reduceByKey(lambda a,b:a+b).sortByKey('true').coalesce(1)
result = result.map(lambda x:x[0]+','+str(x[1]))\
schema_site = sqlContext.createDataFrame(result)
schema_site.registerTempTable("table1")
mysql_url="jdbc:mysql://localhost:3306/test?user=root&password=root&driver=com.mysql.jdbc.Driver"
schema_site.write.jdbc(url=mysql_url, table="table1", mode="append")
我正在使用火花 spark-1.5.0-bin-hadoop2.4
还设置了配置单元元存储。
那么如何将我的 RDD 结果加载到 Mysql 表中。
输入文件是
file1 contents are
1234567 65656545 12
1234567 65675859 11
file2 contents are,
1234567 65656545 12
1234567 65675859 11
and the resultnat RDD is like
1234567 65656545 24
1234567 65675859 22
i created the table in mysql with three colunm,
std_id std_code std_res
我想要表格输出,
std_id std_code std_res
1234567 65656545 24
1234567 65675859 24