@aws-sdk/client-emr

Description

AWS SDK for JavaScript EMR Client for Node.js, Browser and React Native.

Amazon EMR is a web service that makes it easier to process large amounts of
data efficiently. Amazon EMR uses Hadoop processing combined with several Amazon Web Services services to do tasks such as web indexing, data mining, log file analysis,
machine learning, scientific simulation, and data warehouse management.

Installing

To install this package, simply type add or install @aws-sdk/client-emr
using your favorite package manager:
- npm install @aws-sdk/client-emr
- yarn add @aws-sdk/client-emr
- pnpm add @aws-sdk/client-emr

Getting Started

$3

The AWS SDK is modulized by clients and commands.
To send a request, you only need to import the EMRClient and
the commands you need, for example ListStudiosCommand:

``js
// ES5 example
const { EMRClient, ListStudiosCommand } = require("@aws-sdk/client-emr");
`

`ts
// ES6+ example
import { EMRClient, ListStudiosCommand } from "@aws-sdk/client-emr";
`

$3

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 EMRClient({ region: "REGION" });

const params = { /* input parameters / };
const command = new ListStudiosCommand(params);
`

#### Async/await

We recommend using 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
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,
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

`ts
import * as AWS from "@aws-sdk/client-emr";
const client = new AWS.EMR({ region: "REGION" });

// async/await.
try {
const data = await client.listStudios(params);
// process data.
} catch (error) {
// error handling.
}

// Promises.
client
.listStudios(params)
.then((data) => {
// process data.
})
.catch((error) => {
// error handling.
});

// callbacks.
client.listStudios(params, (err, data) => {
// process err and data.
});
`

$3

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
or API Reference.
- Check out the blog posts tagged with aws-sdk-js
on AWS Developer Blog.
- Ask a question on StackOverflow and tag it with aws-sdk-js.
- Join the AWS JavaScript community on gitter.
- If it turns out that you may have found a bug, please open an issue.

To test your universal JavaScript code in Node.js, browser and react-native environments,
visit our code samples repo.

Contributing

This client code is generated automatically. Any modifications will be overwritten the next time the @aws-sdk/client-emr` package is updated.
To contribute to client you can check our generate clients scripts.

License

This SDK is distributed under the
Apache License, Version 2.0,
see LICENSE for more information.

Client Commands (Operations List)

AddInstanceFleet

Command API Reference / Input / Output

AddInstanceGroups

Command API Reference / Input / Output

AddJobFlowSteps

Command API Reference / Input / Output

AddTags

Command API Reference / Input / Output

CancelSteps

Command API Reference / Input / Output

CreatePersistentAppUI

Command API Reference / Input / Output

CreateSecurityConfiguration

Command API Reference / Input / Output

CreateStudio

Command API Reference / Input / Output

CreateStudioSessionMapping

Command API Reference / Input / Output

DeleteSecurityConfiguration

Command API Reference / Input / Output

DeleteStudio

Command API Reference / Input / Output

DeleteStudioSessionMapping

Command API Reference / Input / Output

DescribeCluster

Command API Reference / Input / Output

DescribeJobFlows

Command API Reference / Input / Output

DescribeNotebookExecution

Command API Reference / Input / Output

DescribePersistentAppUI

Command API Reference / Input / Output

DescribeReleaseLabel

Command API Reference / Input / Output

DescribeSecurityConfiguration

Command API Reference / Input / Output

DescribeStep

Command API Reference / Input / Output

DescribeStudio

Command API Reference / Input / Output

GetAutoTerminationPolicy

Command API Reference / Input / Output

GetBlockPublicAccessConfiguration

Command API Reference / Input / Output

GetClusterSessionCredentials

Command API Reference / Input / Output

GetManagedScalingPolicy

Command API Reference / Input / Output

GetOnClusterAppUIPresignedURL

Command API Reference / Input / Output

GetPersistentAppUIPresignedURL

Command API Reference / Input / Output

GetStudioSessionMapping

Command API Reference / Input / Output

ListBootstrapActions

Command API Reference / Input / Output

ListClusters

Command API Reference / Input / Output

ListInstanceFleets

Command API Reference / Input / Output

ListInstanceGroups

Command API Reference / Input / Output

ListInstances

Command API Reference / Input / Output

ListNotebookExecutions

Command API Reference / Input / Output

ListReleaseLabels

Command API Reference / Input / Output

ListSecurityConfigurations

Command API Reference / Input / Output

ListSteps

Command API Reference / Input / Output

ListStudios

Command API Reference / Input / Output

ListStudioSessionMappings

Command API Reference / Input / Output

ListSupportedInstanceTypes

Command API Reference / Input / Output

ModifyCluster

Command API Reference / Input / Output

ModifyInstanceFleet

Command API Reference / Input / Output

ModifyInstanceGroups

Command API Reference / Input / Output

PutAutoScalingPolicy

Command API Reference / Input / Output

PutAutoTerminationPolicy

Command API Reference / Input / Output

PutBlockPublicAccessConfiguration

Command API Reference / Input / Output

PutManagedScalingPolicy

Command API Reference / Input / Output

RemoveAutoScalingPolicy

Command API Reference / Input / Output

RemoveAutoTerminationPolicy

Command API Reference / Input / Output

RemoveManagedScalingPolicy

Command API Reference / Input / Output

RemoveTags

Command API Reference / Input / Output

RunJobFlow

Command API Reference / Input / Output

SetKeepJobFlowAliveWhenNoSteps

Command API Reference / Input / Output

SetTerminationProtection

Command API Reference / Input / Output

SetUnhealthyNodeReplacement

Command API Reference / Input / Output

SetVisibleToAllUsers

Command API Reference / Input / Output

StartNotebookExecution

Command API Reference / Input / Output

StopNotebookExecution

Command API Reference / Input / Output

TerminateJobFlows

Command API Reference / Input / Output

UpdateStudio

Command API Reference / Input / Output

UpdateStudioSessionMapping

Command API Reference / Input / Output