Hi,
I am using Flink 1.19 and have enabled flink autoscaler.
However, I notice that TARGET_DATA_RATE does not get computed.
I see logs such as:
JobVertex 6392d4709721bd3e0f781513b238a70b |
TRUE_OUTPUT_RATE:EvaluatedScalingMetric{current:5152873.404255318,average:5152873.404255318},
TARGET_DATA_RATE:EvaluatedScalingMetric{current:NaN,average:NaN},
PARALLELISM:EvaluatedScalingMetric{current:240.0,average:NaN},
OUTPUT_RATIO:EvaluatedScalingMetric{current:0.9999998279552784,average:0.9999998279552784},
CATCH_UP_DATA_RATE:EvaluatedScalingMetric{current:49508.398888888885,average:NaN},
SCALE_UP_RATE_THRESHOLD:EvaluatedScalingMetric{current:NaN,average:NaN},
SCALE_DOWN_RATE_THRESHOLD:EvaluatedScalingMetric{current:NaN,average:NaN},
LOAD:EvaluatedScalingMetric{current:0.094,average:0.094},
TRUE_PROCESSING_RATE:EvaluatedScalingMetric{current:5152874.290780141,average:5152874.290780141},
MAX_PARALLELISM:EvaluatedScalingMetric{current:512.0,average:NaN},
and
2026-07-08 06:00:38,130 INFO
org.apache.flink.runtime.scheduler.autoscaler.scaling.JobVertexScaler [] -
Target data rate is not available for 6392d4709721bd3e0f781513b238a70b,
cannot compute new parallelism
Any idea why TARGET_DATA_RATE is not getting computed.
Thanks
Sachin
