**To split shards** The following ``split-shard`` example splits the specified shard into two new shards using a new starting hash key of 10. :: aws kinesis split-shard \ --stream-name samplestream \ --shard-to-split shardId-000000000000 \ --new-starting-hash-key 10 This command produces no output. For more information, see `Splitting a Shard <https://docs.aws.amazon.com/streams/latest/dev/kinesis-using-sdk-java-resharding-split.html>`__ in the *Amazon Kinesis Data Streams Developer Guide*.