spark-submit
时间: 2023-11-15 10:02:41 浏览: 96
spark-submit是Spark应用程序的主要入口点,它用于将应用程序提交到集群上运行。通过spark-submit命令,可以指定应用程序的主类、依赖项、资源文件等信息,并可以设置一些Spark的配置属性,如Executor的数量、内存大小、CPU核数等。在提交应用程序时,可以选择不同的部署模式,如client模式和cluster模式。在client模式下,驱动程序运行在提交应用程序的客户端上,而在cluster模式下,驱动程序运行在集群中的某个节点上。除了命令行参数外,还可以通过properties文件来设置Spark的配置属性。
相关问题
spark- submit
Spark-submit is a command-line tool that is used to submit Spark applications to a cluster. It is used to submit applications written in Java, Scala, or Python to a Spark cluster. The tool takes a Spark application and its dependencies as input and submits them to the cluster for execution.
The syntax for using spark-submit is as follows:
```spark-submit [options] <app jar | python file> [app arguments]```
Some of the commonly used options with spark-submit are:
- `--class`: The name of the class containing the main method of the application.
- `--master`: The URL of the cluster manager to which the application should be submitted.
- `--deploy-mode`: The mode in which the application should be deployed (cluster or client).
- `--num-executors`: The number of executors to be used for the application.
- `--executor-memory`: The memory allocated to each executor.
- `--driver-memory`: The memory allocated to the driver program.
Once the application is submitted, spark-submit launches the driver program on a cluster node and starts the application. The output of the application is then returned to the driver program, which collects and aggregates the results.
spark-submit提交spark-examples位置
Spark-submit是Apache Spark提供的命令行工具,用于提交和运行Spark应用程序。在使用`spark-submit`提交`spark-examples`中的示例程序时,你需要确保你的Spark安装目录结构正确,并且`spark-examples`目录位于`spark-submit`能够找到的位置。
通常情况下,`spark-examples`位于Spark的安装路径下的`examples`子目录中。例如,如果你的Spark安装在`/usr/local/spark`,那么`spark-examples`就在`/usr/local/spark/examples`。
要提交`spark-examples`中的一个特定示例,你可以在命令行中这样操作:
```bash
spark-submit --class <example-class> --master <spark-master-url> /usr/local/spark/examples/jars/spark-examples_2.12-<spark-version>.jar
```
这里的参数说明:
- `--class` 指定示例类的全名。
- `--master` 设置Spark集群的URL,如果是本地模式则为`local`或`local[N]`,集群模式如`yarn`、`k8s`等。
- `spark-examples_2.12-<spark-version>.jar` 是包含`spark-examples`的JAR文件,你需要替换 `<spark-version>` 为你的Spark版本号。
如果你的Spark安装路径不同,或者你想从其他位置提交,只需要将JAR文件路径替换为你实际的路径即可。