[jira] [Created] (SPARK-31627) Font style of Spark SQL DAG-viz is broken in Chrome on macOS

["Kousuke Saruta (Jira)" <ji...@apache.org>]

Kousuke Saruta created SPARK-31627:
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             Summary: Font style of Spark SQL DAG-viz is broken in Chrome on macOS
                 Key: SPARK-31627
                 URL: https://issues.apache.org/jira/browse/SPARK-31627
             Project: Spark
          Issue Type: Bug
          Components: Web UI
    Affects Versions: 3.1.0
         Environment: * macOS
* Chrome 81
            Reporter: Kousuke Saruta
         Attachments: font-weight-does-not-work.png

If all the following condition is true, font style of Spark SQL DAG-viz can be broken.
More specifically, plan name will not be bold style if the plan is WholeStageCodegen.

* macOS
* Chrome (version 81)

The current master uses Bootstrap4, which defines the default font family as follows.
{code}
-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji"
{code}

If we use Chrome, BlinkMacSystemFont is used but font-weight property doesn't work with the font.
This issue is reported here [here|https://bugs.chromium.org/p/chromium/issues/detail?id=1057654]



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