Vinod Kumar Vavilapalli created YARN-5312:
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Summary: Parameter 'size' in the webservices
"/containerlogs/$containerid/$filename" and in AHSWebServices is semantically
confusing
Key: YARN-5312
URL: https://issues.apache.org/jira/browse/YARN-5312
Project: Hadoop YARN
Issue Type: Bug
Reporter: Vinod Kumar Vavilapalli
This got added in YARN-5088 and I found this while reviewing YARN-5224.
bq. Also, the parameter 'size' in the API
"/containerlogs/$containerid/$filename" and similarly in AHSWebServices is
confusing with semantics. I think we are better off with an offset and size.
An offset (in bytes, +ve to indicate from the start and -ve to indicate from
the end) together with a size (in bytes) indicating how much to read from the
offset are a better combination - this is how most file-system APIs look like,
for comparison.
I can also imagine number of lines as a better unit than bytes for offset and
size - perhaps yet another ticket.
/cc [~vvasudev].
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