changgyoopark-db opened a new pull request, #47008:
URL: https://github.com/apache/spark/pull/47008
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### What changes were proposed in this pull request?
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This is a Scala port of https://github.com/apache/spark/pull/46221 and
https://github.com/apache/spark/pull/46435.
A client is unaware of a server restart or the server having closed the
client until it receives an error. However, at this point, the client in unable
to create a new session to the same connect endpoint, since the stale session
is still recorded
as the active and default session.
With this change, when the server communicates that the session has changed
via a GRPC error, the session and the respective client are marked as stale,
thereby allowing a new default connection can be created via the session
builder.
In some cases, particularly when running older versions of the Spark cluster
(3.5), the error actually manifests as a mismatch in the observed server-side
session id between calls. With this fix, we also capture this case and ensure
that this case is
also handled.
### Why are the changes needed?
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Being unable to use getOrCreate() after an error is unacceptable and should
be fixed.
### Does this PR introduce _any_ user-facing change?
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No
### How was this patch tested?
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./build/sbt testOnly *SparkSessionE2ESuite
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No
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