Surya Hebbar created IMPALA-14069:
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Summary: Factor possibility of zero timestamps in aggregated event
sequences
Key: IMPALA-14069
URL: https://issues.apache.org/jira/browse/IMPALA-14069
Project: IMPALA
Issue Type: Bug
Reporter: Surya Hebbar
Assignee: Surya Hebbar
Currently, the missing event timestamps are reported(i.e.
unreported_event_instance_idxs) and then substituted by zeros within the JSON
profile.
Even with micro/nanosecond precision some event timestamps are still recorded
as zeros (i.e. Prepare Finished - 0ns).
These timestamps need to be distinguished from missing timestamps substituted
with zeros(0).
But, skipping missing values and loosing alignment between instance timestamps
is not favorable for summary, representation or visualization.
So, the aggregated event sequence timestamps should distinguish between both
types of timestamps by value(i.e. other than existing
unreported_event_instance_idxs)
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