can't scale up from minimum

[szinck]

If you create a stream having $minShards, auto-scaling will not scale up even though it thinks it needs to.

I think this is due to the short circuit logic here:

https://github.com/awslabs/amazon-kinesis-scaling-utils/blob/master/src/main/java/com/amazonaws/services/kinesis/scaling/StreamScaler.java#L342-L354

Basically if numberOfShards == minShards, it will not scale up. It also looks like it will not scale down once it reaches maxShards.

Here are some logs from where I tested this:

19-May-2015 22:35:43.203 INFO [pool-1-thread-1] com.amazonaws.services.kinesis.scaling.auto.StreamMonitor.processCloudwatchMetrics Stream Used Capacity 92.82% (973,236 Bytes of 1,048,576)
19-May-2015 22:35:43.203 INFO [pool-1-thread-1] com.amazonaws.services.kinesis.scaling.auto.StreamMonitor.processCloudwatchMetrics Scale Up Stream test-stream by 2 Shards as PUT has been above 85% for 1 Minute
s
19-May-2015 22:35:43.469 INFO [pool-1-thread-1] com.amazonaws.services.kinesis.scaling.StreamScaler.scaleStream Scaling Stream test-stream from 1 Shards to 3
19-May-2015 22:35:43.686 INFO [pool-1-thread-1] com.amazonaws.services.kinesis.scaling.StreamScaler.scaleStream Minimum Shard Count of 1 Reached

[IanMeyers]

Ah sorry about this - the integration test made an incorrect assumption. Fixed in place with a patch to .9.1.8

[szinck]

wow thanks!