shardLevelMetrics  
  List of shard-level metrics to enable.
The following are the valid shard-level metrics. The value "ALL" enables every metric.
- IncomingBytes
- IncomingRecords
- OutgoingBytes
- OutgoingRecords
- WriteProvisionedThroughputExceeded
- ReadProvisionedThroughputExceeded
- IteratorAgeMilliseconds
- ALL
For more information, see Monitoring the Amazon Kinesis Data Streams Service with Amazon CloudWatch in the Amazon Kinesis Data Streams Developer Guide.