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[ aws . kinesis ]

create-stream

Description

Creates a Kinesis data stream. A stream captures and transports data records that are continuously emitted from different data sources or producers . Scale-out within a stream is explicitly supported by means of shards, which are uniquely identified groups of data records in a stream.

You specify and control the number of shards that a stream is composed of. Each shard can support reads up to five transactions per second, up to a maximum data read total of 2 MiB per second. Each shard can support writes up to 1,000 records per second, up to a maximum data write total of 1 MiB per second. If the amount of data input increases or decreases, you can add or remove shards.

The stream name identifies the stream. The name is scoped to the Amazon Web Services account used by the application. It is also scoped by Amazon Web Services Region. That is, two streams in two different accounts can have the same name, and two streams in the same account, but in two different Regions, can have the same name.

CreateStream is an asynchronous operation. Upon receiving a CreateStream request, Kinesis Data Streams immediately returns and sets the stream status to CREATING . After the stream is created, Kinesis Data Streams sets the stream status to ACTIVE . You should perform read and write operations only on an ACTIVE stream.

You receive a LimitExceededException when making a CreateStream request when you try to do one of the following:

  • Have more than five streams in the CREATING state at any point in time.
  • Create more shards than are authorized for your account.

For the default shard limit for an Amazon Web Services account, see Amazon Kinesis Data Streams Limits in the Amazon Kinesis Data Streams Developer Guide . To increase this limit, contact Amazon Web Services Support .

You can use DescribeStreamSummary to check the stream status, which is returned in StreamStatus .

CreateStream has a limit of five transactions per second per account.

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.

Synopsis

  create-stream
--stream-name <value>
[--shard-count <value>]
[--stream-mode-details <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]

Options

--stream-name (string)

A name to identify the stream. The stream name is scoped to the Amazon Web Services account used by the application that creates the stream. It is also scoped by Amazon Web Services Region. That is, two streams in two different Amazon Web Services accounts can have the same name. Two streams in the same Amazon Web Services account but in two different Regions can also have the same name.

--shard-count (integer)

The number of shards that the stream will use. The throughput of the stream is a function of the number of shards; more shards are required for greater provisioned throughput.

--stream-mode-details (structure)

Indicates the capacity mode of the data stream. Currently, in Kinesis Data Streams, you can choose between an on-demand capacity mode and a provisioned capacity mode for your data streams.

StreamMode -> (string)

Specifies the capacity mode to which you want to set your data stream. Currently, in Kinesis Data Streams, you can choose between an on-demand capacity mode and a provisioned capacity mode for your data streams.

Shorthand Syntax:

StreamMode=string

JSON Syntax:

{
  "StreamMode": "PROVISIONED"|"ON_DEMAND"
}

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.

Examples

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal's quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

To create a data stream

The following create-stream example creates a data stream named samplestream with 3 shards.

aws kinesis create-stream \
    --stream-name samplestream \
    --shard-count 3

This command produces no output.

For more information, see Creating a Stream in the Amazon Kinesis Data Streams Developer Guide.

Output

None