# @aws-sdk/client-emr-serverless
## Description
AWS SDK for JavaScript EMRServerless Client for Node.js, Browser and React Native.
Amazon EMR Serverless is a new deployment option for Amazon EMR. Amazon EMR Serverless provides a serverless runtime environment that simplifies running
analytics applications using the latest open source frameworks such as Apache Spark and
Apache Hive. With Amazon EMR Serverless, you don’t have to configure, optimize,
secure, or operate clusters to run applications with these frameworks.
The API reference to Amazon EMR Serverless is emr-serverless. The
emr-serverless prefix is used in the following scenarios:
-
It is the prefix in the CLI commands for Amazon EMR Serverless. For
example, aws emr-serverless start-job-run.
-
It is the prefix before IAM policy actions for Amazon EMR Serverless. For
example, "Action": ["emr-serverless:StartJobRun"]. For more information,
see Policy actions for Amazon EMR Serverless.
-
It is the prefix used in Amazon EMR Serverless service endpoints. For
example, emr-serverless.us-east-2.amazonaws.com.
## Installing
To install the this package, simply type add or install @aws-sdk/client-emr-serverless
using your favorite package manager:
- `npm install @aws-sdk/client-emr-serverless`
- `yarn add @aws-sdk/client-emr-serverless`
- `pnpm add @aws-sdk/client-emr-serverless`
## Getting Started
### Import
The AWS SDK is modulized by clients and commands.
To send a request, you only need to import the `EMRServerlessClient` and
the commands you need, for example `CancelJobRunCommand`:
```js
// ES5 example
const { EMRServerlessClient, CancelJobRunCommand } = require("@aws-sdk/client-emr-serverless");
```
```ts
// ES6+ example
import { EMRServerlessClient, CancelJobRunCommand } from "@aws-sdk/client-emr-serverless";
```
### Usage
To send a request, you:
- Initiate client with configuration (e.g. credentials, region).
- Initiate command with input parameters.
- Call `send` operation on client with command object as input.
- If you are using a custom http handler, you may call `destroy()` to close open connections.
```js
// a client can be shared by different commands.
const client = new EMRServerlessClient({ region: "REGION" });
const params = {
/** input parameters */
};
const command = new CancelJobRunCommand(params);
```
#### Async/await
We recommend using [await](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/await)
operator to wait for the promise returned by send operation as follows:
```js
// async/await.
try {
const data = await client.send(command);
// process data.
} catch (error) {
// error handling.
} finally {
// finally.
}
```
Async-await is clean, concise, intuitive, easy to debug and has better error handling
as compared to using Promise chains or callbacks.
#### Promises
You can also use [Promise chaining](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_promises#chaining)
to execute send operation.
```js
client.send(command).then(
(data) => {
// process data.
},
(error) => {
// error handling.
}
);
```
Promises can also be called using `.catch()` and `.finally()` as follows:
```js
client
.send(command)
.then((data) => {
// process data.
})
.catch((error) => {
// error handling.
})
.finally(() => {
// finally.
});
```
#### Callbacks
We do not recommend using callbacks because of [callback hell](http://callbackhell.com/),
but they are supported by the send operation.
```js
// callbacks.
client.send(command, (err, data) => {
// process err and data.
});
```
#### v2 compatible style
The client can also send requests using v2 compatible style.
However, it results in a bigger bundle size and may be dropped in next major version. More details in the blog post
on [modular packages in AWS SDK for JavaScript](https://aws.amazon.com/blogs/developer/modular-packages-in-aws-sdk-for-javascript/)
```ts
import * as AWS from "@aws-sdk/client-emr-serverless";
const client = new AWS.EMRServerless({ region: "REGION" });
// async/await.
try {
const data = await client.cancelJobRun(params);
// process data.
} catch (error) {
// error handling.
}
// Promises.
client
.cancelJobRun(params)
.then((data) => {
// process data.
})
.catch((error) => {
// error handling.
});
// callbacks.
client.cancelJobRun(params, (err, data) => {
// process err and data.
});
```
### Troubleshooting
When the service returns an exception, the error will include the exception information,
as well as response metadata (e.g. request id).
```js
try {
const data = await client.send(command);
// process data.
} catch (error) {
const { requestId, cfId, extendedRequestId } = error.$$metadata;
console.log({ requestId, cfId, extendedRequestId });
/**
* The keys within exceptions are also parsed.
* You can access them by specifying exception names:
* if (error.name === 'SomeServiceException') {
* const value = error.specialKeyInException;
* }
*/
}
```
## Getting Help
Please use these community resources for getting help.
We use the GitHub issues for tracking bugs and feature requests, but have limited bandwidth to address them.
- Visit [Developer Guide](https://docs.aws.amazon.com/sdk-for-javascript/v3/developer-guide/welcome.html)
or [API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/index.html).
- Check out the blog posts tagged with [`aws-sdk-js`](https://aws.amazon.com/blogs/developer/tag/aws-sdk-js/)
on AWS Developer Blog.
- Ask a question on [StackOverflow](https://stackoverflow.com/questions/tagged/aws-sdk-js) and tag it with `aws-sdk-js`.
- Join the AWS JavaScript community on [gitter](https://gitter.im/aws/aws-sdk-js-v3).
- If it turns out that you may have found a bug, please [open an issue](https://github.com/aws/aws-sdk-js-v3/issues/new/choose).
To test your universal JavaScript code in Node.js, browser and react-native environments,
visit our [code samples repo](https://github.com/aws-samples/aws-sdk-js-tests).
## Contributing
This client code is generated automatically. Any modifications will be overwritten the next time the `@aws-sdk/client-emr-serverless` package is updated.
To contribute to client you can check our [generate clients scripts](https://github.com/aws/aws-sdk-js-v3/tree/main/scripts/generate-clients).
## License
This SDK is distributed under the
[Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0),
see LICENSE for more information.
## Client Commands (Operations List)
CancelJobRun
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/canceljobruncommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/canceljobruncommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/canceljobruncommandoutput.html)
CreateApplication
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/createapplicationcommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/createapplicationcommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/createapplicationcommandoutput.html)
DeleteApplication
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/deleteapplicationcommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/deleteapplicationcommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/deleteapplicationcommandoutput.html)
GetApplication
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/getapplicationcommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/getapplicationcommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/getapplicationcommandoutput.html)
GetDashboardForJobRun
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/getdashboardforjobruncommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/getdashboardforjobruncommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/getdashboardforjobruncommandoutput.html)
GetJobRun
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/getjobruncommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/getjobruncommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/getjobruncommandoutput.html)
ListApplications
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/listapplicationscommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/listapplicationscommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/listapplicationscommandoutput.html)
ListJobRuns
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/listjobrunscommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/listjobrunscommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/listjobrunscommandoutput.html)
ListTagsForResource
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/listtagsforresourcecommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/listtagsforresourcecommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/listtagsforresourcecommandoutput.html)
StartApplication
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/startapplicationcommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/startapplicationcommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/startapplicationcommandoutput.html)
StartJobRun
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/startjobruncommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/startjobruncommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/startjobruncommandoutput.html)
StopApplication
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/stopapplicationcommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/stopapplicationcommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/stopapplicationcommandoutput.html)
TagResource
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/tagresourcecommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/tagresourcecommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/tagresourcecommandoutput.html)
UntagResource
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/untagresourcecommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/untagresourcecommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/untagresourcecommandoutput.html)
UpdateApplication
[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/classes/updateapplicationcommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/updateapplicationcommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-emr-serverless/interfaces/updateapplicationcommandoutput.html)