It seems that carbonsearch gets confused by kafka topic truncation

[azhiltsov]

If you truncate the kafka topic while carbonsearch trying to do initial warm-up, then carbonsearch gets confused and newer reach the warm state.

2018/02/22 19:19:32 kafka consumer: topic sm_metrics 92.31% warm (threshold is 99.00%)
2018/02/22 19:19:42 kafka consumer: topic sm_metrics 92.31% warm (threshold is 99.00%)
2018/02/22 19:19:52 kafka consumer: topic sm_metrics 92.32% warm (threshold is 99.00%)
2018/02/22 19:20:02 kafka consumer: topic sm_metrics 92.32% warm (threshold is 99.00%)
2018/02/22 19:20:12 kafka consumer: topic sm_metrics 92.33% warm (threshold is 99.00%)
2018/02/22 19:20:22 kafka consumer: topic sm_metrics 92.33% warm (threshold is 99.00%)
2018/02/22 19:20:32 kafka consumer: topic sm_metrics 92.33% warm (threshold is 99.00%)
2018/02/22 19:20:42 kafka consumer: topic sm_metrics 92.33% warm (threshold is 99.00%)
.....truncation happen....
2018/02/26 17:01:51 kafka consumer: topic sm_metrics 92.33% warm (threshold is 99.00%)