在IBM DSX上，对于Python-Spark 2.1内核，我得到以下代码：
from pyspark.sql import SparkSession
spark = SparkSession.builder.getOrCreate()
# @hidden_cell
# The following code is used to access your data and contains your credentials.
# You might want to remove those credentials before you share your notebook.
properties = {
'jdbcurl': 'JDBCURL',
'user': 'USER',
'password': 'PASSWORD'
}
data_df_1 = spark.read.jdbc(properties['jdbcurl'], table='USER.TABLE', properties=properties)
data_df_1.head()
此错误：
Py4JJavaError: An error occurred while calling o82.jdbc.
: java.sql.SQLException: No suitable driver
at java.sql.DriverManager.getDriver(DriverManager.java:326)
at org.apache.spark.sql.execution.datasources.jdbc.JDBCOptions$$anonfun$7.apply(JDBCOptions.scala:84)
at org.apache.spark.sql.execution.datasources.jdbc.JDBCOptions$$anonfun$7.apply(JDBCOptions.scala:84)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.sql.execution.datasources.jdbc.JDBCOptions.<init>(JDBCOptions.scala:83)
at org.apache.spark.sql.execution.datasources.jdbc.JDBCOptions.<init>(JDBCOptions.scala:34)
at org.apache.spark.sql.execution.datasources.jdbc.JdbcRelationProvider.createRelation(JdbcRelationProvider.scala:32)
at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:330)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:152)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:125)
at org.apache.spark.sql.DataFrameReader.jdbc(DataFrameReader.scala:166)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:95)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at java.lang.reflect.Method.invoke(Method.java:507)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
at py4j.Gateway.invoke(Gateway.java:280)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:214)
at java.lang.Thread.run(Thread.java:785)
我仅在第一次执行时收到此错误。但是，当我再次执行相同的代码时，它可以工作。
这看起来像 https://issues.apache.org/jira/browse/SPARK-19209. 该问题中建议的解决方法是提供"驱动程序"选项。
在您的示例中，如果您需要 DB2 驱动程序：
properties = {
'jdbcurl': 'JDBCURL',
'user': 'USER',
'password': 'PASSWORD',
'driver': 'com.ibm.db2.jcc.DB2Driver'
}