public void setRetentionPeriodHours(Integer retentionPeriodHours) {
        this.retentionPeriodHours = retentionPeriodHours;
    }
<p>
The new retention period of the stream, in hours. Must be less than the current retention period.
</p>

@param retentionPeriodHours
       The new retention period of the stream, in hours. Must be less than the current retention period.
aws-java-sdk-kinesis/src/main/java/com/amazonaws/services/kinesis/model/DecreaseStreamRetentionPeriodRequest.java