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From "Fabian Hueske (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-2943) Confusing Bytes/Records "read" and "write" labels in WebUI job view
Date Thu, 29 Oct 2015 17:36:27 GMT
Fabian Hueske created FLINK-2943:
------------------------------------

             Summary: Confusing Bytes/Records "read" and "write" labels in WebUI job view
                 Key: FLINK-2943
                 URL: https://issues.apache.org/jira/browse/FLINK-2943
             Project: Flink
          Issue Type: Improvement
          Components: Webfrontend
    Affects Versions: 0.10
            Reporter: Fabian Hueske
             Fix For: 0.10


The job detail view of the WebUI shows the amount of data and records received from and sent
out by each individual operator. This information is very valuable, if correctly interpreted.


However, the table headings for the corresponding columns ("Bytes read", "Records read", "Bytes
written", and "Records written") are confusing in my opinion because they do not indicate
that only incoming and outgoing data is tracked and disk IO is not considered at all. 
For example, the UI shows no "Bytes/Records read" and only "Bytes/Records written" for DataSources
which I find counter-intuitive.

I propose to rename these labels to either "X received" and "X sent" or "X incoming" and "X
outgoing" to make clear that this information only affects incoming and outgoing data.

Opinions?



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