[Webkit-unassigned] [Bug 157494] New: Modern IDB: Prevent the same transaction from being commited/aborted twice

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=157494

            Bug ID: 157494
           Summary: Modern IDB: Prevent the same transaction from being
                    commited/aborted twice
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: beidson at apple.com

Modern IDB: Prevent the same transaction from being commited/aborted twice

Rarely, due to page navigation or worker shutdown, a transaction might be either committed or aborted after it has already been committed or aborted.

I could not reproduce this with a targeted test case attempting to reproduce it, but it is showing up as a source of at least some of the mysterious flakes (https://bugs.webkit.org/show_bug.cgi?id=154968)

By detecting this situation and turning it into an explicit error, we'll turn at least some mysterious timeouts into errors that will then become more actionable.

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