vthinkxie commented on issue #9953: [FLINK-14471][web]: Hide error when metric api broken URL: https://github.com/apache/flink/pull/9953#issuecomment-555805026 > @vthinkxie is there a way to test this w/o restarting the job manager, by just changing the UI files? (Unfortunately I won't be able to make a complete custom build/deploy for this change currently.) > > Also, would it be better to display a visual indicator that the watermark metrics could not be retrieved rather than just showing nothing. That caused a lot of confusion for users previously and I would almost prefer the current error message over that previous behavior. You can follow this https://github.com/apache/flink/tree/master/flink-runtime-web#developing to start the UI without building it. It is ok to display an indicator when the rest API error, I will update it later.
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