jupyter 编写pyspark程序放到yarn运行,请给出模板
时间: 2024-05-02 07:20:03 浏览: 151
以下是一个简单的 Jupyter Notebook 模板,用于编写 PySpark 程序并在 YARN 上运行:
1. 首先,导入必要的库和模块:
```python
import findspark
findspark.init()
from pyspark.sql import SparkSession
from pyspark import SparkConf, SparkContext
```
2. 接下来,创建 SparkSession 对象:
```python
conf = SparkConf().setAppName("MyApp")
sc = SparkContext(conf=conf)
spark = SparkSession.builder.master("yarn").appName("MyApp").getOrCreate()
```
3. 编写 PySpark 程序,并通过 `spark` 对象执行:
```python
# 例如
df = spark.read.csv("data.csv")
df.show()
```
4. 最后,关闭 SparkSession 和 SparkContext:
```python
spark.stop()
sc.stop()
```
完整的 PySpark 程序示例:
```python
import findspark
findspark.init()
from pyspark.sql import SparkSession
from pyspark import SparkConf, SparkContext
conf = SparkConf().setAppName("MyApp")
sc = SparkContext(conf=conf)
spark = SparkSession.builder.master("yarn").appName("MyApp").getOrCreate()
# PySpark 程序
df = spark.read.csv("data.csv")
df.show()
spark.stop()
sc.stop()
```
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