Copyright | (c) 2013-2023 Brendan Hay |
---|---|
License | Mozilla Public License, v. 2.0. |
Maintainer | Brendan Hay |
Stability | auto-generated |
Portability | non-portable (GHC extensions) |
Safe Haskell | Safe-Inferred |
Language | Haskell2010 |
Updates the shard count of the specified stream to the specified number of shards. This API is only supported for the data streams with the provisioned capacity mode.
When invoking this API, it is recommended you use the StreamARN
input
parameter rather than the StreamName
input parameter.
Updating the shard count is an asynchronous operation. Upon receiving
the request, Kinesis Data Streams returns immediately and sets the
status of the stream to UPDATING
. After the update is complete,
Kinesis Data Streams sets the status of the stream back to ACTIVE
.
Depending on the size of the stream, the scaling action could take a few
minutes to complete. You can continue to read and write data to your
stream while its status is UPDATING
.
To update the shard count, Kinesis Data Streams performs splits or merges on individual shards. This can cause short-lived shards to be created, in addition to the final shards. These short-lived shards count towards your total shard limit for your account in the Region.
When using this operation, we recommend that you specify a target shard count that is a multiple of 25% (25%, 50%, 75%, 100%). You can specify any target value within your shard limit. However, if you specify a target that isn't a multiple of 25%, the scaling action might take longer to complete.
This operation has the following default limits. By default, you cannot do the following:
- Scale more than ten times per rolling 24-hour period per stream
- Scale up to more than double your current shard count for a stream
- Scale down below half your current shard count for a stream
- Scale up to more than 10000 shards in a stream
- Scale a stream with more than 10000 shards down unless the result is less than 10000 shards
- Scale up to more than the shard limit for your account
For the default limits for an Amazon Web Services account, see Streams Limits in the Amazon Kinesis Data Streams Developer Guide. To request an increase in the call rate limit, the shard limit for this API, or your overall shard limit, use the limits form.
Synopsis
- data UpdateShardCount = UpdateShardCount' {}
- newUpdateShardCount :: Natural -> ScalingType -> UpdateShardCount
- updateShardCount_streamARN :: Lens' UpdateShardCount (Maybe Text)
- updateShardCount_streamName :: Lens' UpdateShardCount (Maybe Text)
- updateShardCount_targetShardCount :: Lens' UpdateShardCount Natural
- updateShardCount_scalingType :: Lens' UpdateShardCount ScalingType
- data UpdateShardCountResponse = UpdateShardCountResponse' {}
- newUpdateShardCountResponse :: Int -> UpdateShardCountResponse
- updateShardCountResponse_currentShardCount :: Lens' UpdateShardCountResponse (Maybe Natural)
- updateShardCountResponse_streamARN :: Lens' UpdateShardCountResponse (Maybe Text)
- updateShardCountResponse_streamName :: Lens' UpdateShardCountResponse (Maybe Text)
- updateShardCountResponse_targetShardCount :: Lens' UpdateShardCountResponse (Maybe Natural)
- updateShardCountResponse_httpStatus :: Lens' UpdateShardCountResponse Int
Creating a Request
data UpdateShardCount Source #
See: newUpdateShardCount
smart constructor.
UpdateShardCount' | |
|
Instances
Create a value of UpdateShardCount
with all optional fields omitted.
Use generic-lens or optics to modify other optional fields.
The following record fields are available, with the corresponding lenses provided for backwards compatibility:
UpdateShardCount
, updateShardCount_streamARN
- The ARN of the stream.
UpdateShardCount
, updateShardCount_streamName
- The name of the stream.
UpdateShardCount
, updateShardCount_targetShardCount
- The new number of shards. This value has the following default limits.
By default, you cannot do the following:
- Set this value to more than double your current shard count for a stream.
- Set this value below half your current shard count for a stream.
- Set this value to more than 10000 shards in a stream (the default limit for shard count per stream is 10000 per account per region), unless you request a limit increase.
- Scale a stream with more than 10000 shards down unless you set this value to less than 10000 shards.
$sel:scalingType:UpdateShardCount'
, updateShardCount_scalingType
- The scaling type. Uniform scaling creates shards of equal size.
Request Lenses
updateShardCount_streamARN :: Lens' UpdateShardCount (Maybe Text) Source #
The ARN of the stream.
updateShardCount_streamName :: Lens' UpdateShardCount (Maybe Text) Source #
The name of the stream.
updateShardCount_targetShardCount :: Lens' UpdateShardCount Natural Source #
The new number of shards. This value has the following default limits. By default, you cannot do the following:
- Set this value to more than double your current shard count for a stream.
- Set this value below half your current shard count for a stream.
- Set this value to more than 10000 shards in a stream (the default limit for shard count per stream is 10000 per account per region), unless you request a limit increase.
- Scale a stream with more than 10000 shards down unless you set this value to less than 10000 shards.
updateShardCount_scalingType :: Lens' UpdateShardCount ScalingType Source #
The scaling type. Uniform scaling creates shards of equal size.
Destructuring the Response
data UpdateShardCountResponse Source #
See: newUpdateShardCountResponse
smart constructor.
UpdateShardCountResponse' | |
|
Instances
newUpdateShardCountResponse Source #
Create a value of UpdateShardCountResponse
with all optional fields omitted.
Use generic-lens or optics to modify other optional fields.
The following record fields are available, with the corresponding lenses provided for backwards compatibility:
$sel:currentShardCount:UpdateShardCountResponse'
, updateShardCountResponse_currentShardCount
- The current number of shards.
UpdateShardCount
, updateShardCountResponse_streamARN
- The ARN of the stream.
UpdateShardCount
, updateShardCountResponse_streamName
- The name of the stream.
UpdateShardCount
, updateShardCountResponse_targetShardCount
- The updated number of shards.
$sel:httpStatus:UpdateShardCountResponse'
, updateShardCountResponse_httpStatus
- The response's http status code.
Response Lenses
updateShardCountResponse_currentShardCount :: Lens' UpdateShardCountResponse (Maybe Natural) Source #
The current number of shards.
updateShardCountResponse_streamARN :: Lens' UpdateShardCountResponse (Maybe Text) Source #
The ARN of the stream.
updateShardCountResponse_streamName :: Lens' UpdateShardCountResponse (Maybe Text) Source #
The name of the stream.
updateShardCountResponse_targetShardCount :: Lens' UpdateShardCountResponse (Maybe Natural) Source #
The updated number of shards.
updateShardCountResponse_httpStatus :: Lens' UpdateShardCountResponse Int Source #
The response's http status code.