Github user carsonwang commented on the pull request:
https://github.com/apache/spark/pull/10061#issuecomment-160889037
Hi @JoshRosen, the execution IDs are from the static `SQLExecution` object.
So I think they are always unique. Yes, previously each `SQLContext` has its
own `SQLListener`. Since the SQL events are now sent to the same event bus, all
`SQLListeners` will receives SQL events executed from other `SQLContexts`. If
we still want to keep one UI Tab for each `SQLContext`, I think we need keep
something like a SQLContext ID in the SQL event so that the `SQLListener` knows
if it need handle that event. Is there any strong requirement to keep one UI
Tab for each `SQLContext`? I remember some users don't want so many UI tabs
because they create many `SQLContext`.
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