create_stream

create_stream(**kwargs)

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 can create your data stream using either on-demand or provisioned capacity mode. Data streams with an on-demand mode require no capacity planning and automatically scale to handle gigabytes of write and read throughput per minute. With the on-demand mode, Kinesis Data Streams automatically manages the shards in order to provide the necessary throughput. For the data streams with a provisioned mode, you must specify the number of shards for the data stream. 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

Request Syntax

response = client.create_stream(
    StreamName='string',
    ShardCount=123,
    StreamModeDetails={
        'StreamMode': 'PROVISIONED'|'ON_DEMAND'
    }
)

Parameters

• StreamName (string) --

  [REQUIRED]

  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.

• ShardCount (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.
• StreamModeDetails (dict) --

  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) -- [REQUIRED]

    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.

Returns

None

Exceptions

• Kinesis.Client.exceptions.ResourceInUseException
• Kinesis.Client.exceptions.LimitExceededException
• Kinesis.Client.exceptions.InvalidArgumentException