zentol commented on issue #11104: [FLINK-16051] Subtask ID in Overview-Subtasks should start from 1 URL: https://github.com/apache/flink/pull/11104#issuecomment-586945807 I remember a similar discussion in the past (can't find it right now), with the conclusion being that the only proper solution would be to be consistent across the entire project. However, at the time we did not see a good way to implement this, and I still don't see it now. As a result we sticked with the existing inconsistency. Without a clear goal of what the final solution should be there is no point in taking intermediate steps, as in the worst case they go in the wrong direction. Sure, starting the index with 1 is "nicer", but implies that in every log statement we have to remember to increment the subtask index. At the same time, changing the subtask index for metrics/logs may create headaches for or even break existing setups.
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