152892 2016-01-08 06:35:08 -0800 Modern IDB: storage/indexeddb/dont-wedge.html is flaky 2016-01-12 11:18:50 -0800 1 1 1 Unclassified WebKit WebCore Misc. WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED P2 Normal --- 149117 150882 1 beidson beidson achristensen alecflett commit-queue jsbell oldest_to_newest 1153815 0 beidson 2016-01-08 06:35:08 -0800 Modern IDB: storage/indexeddb/dont-wedge.html is flaky https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=storage/indexeddb/dont-wedge.html 1153834 1 beidson 2016-01-08 08:51:55 -0800 Marked flaky in http://trac.webkit.org/changeset/194765 1154541 2 beidson 2016-01-11 16:41:47 -0800 Trying to explore this now. No matter what I try I can't reproduce locally. I also can't figure out how to get the flakiness dashboard to actually show me the output before it timed out. =/ 1154542 3 beidson 2016-01-11 16:43:47 -0800 Got them. For posterity: FAIL: Timed out waiting for notifyDone to be called Check that a page reloaded during an in-flight upgradeneeded event doesn't hang. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB; dbname = "dont-wedge.html" dbname1 = dbname + '1' dbname2 = dbname + '2' deleteDatabase1(): indexedDB.deleteDatabase(dbname1) In a multi process implementation this deleteDatabase may be blocked temporarily, so we don't check for either the presence or absence of a blocked event. 1154543 4 beidson 2016-01-11 16:45:16 -0800 Setting DRT up to run the test 1000 times I can get it to sometimes hang locally. Exploring. 1154561 5 beidson 2016-01-11 17:07:06 -0800 When the IDBOpenDBRequest is told about its database connection opening in IDBOpenDBRequest::requestCompleted, its context has already stopped, so it doesn't actually create the database connection and/or deliver the event. Also, since the connection never fully opens, it doesn't get closed with the page navigates. This is likely a timing race between the page navigation and the server opening a connection requested before the navigation. 1154679 6 268763 beidson 2016-01-12 06:36:43 -0800 Created attachment 268763 Patch v1 Never came up with a way to truly and reliably reproduce other than "tell DRT to run the test 10,000 times in a row and hope it hits" Before this patch, it would always hit by run ~1000 After this patch it doesn't hit at all, and with logging on I can verify the new code fires every once and awhile, doing what it is support to do. 1154754 7 beidson 2016-01-12 10:31:37 -0800 (In reply to comment #6) > > After this patch it doesn't hit at all, and with logging on I can verify the > new code fires every once and awhile, doing what it is support to do. s/support/supposed/ 1154782 8 beidson 2016-01-12 11:18:50 -0800 http://trac.webkit.org/changeset/194904 268763 2016-01-12 06:36:43 -0800 2016-01-12 10:37:51 -0800 Patch v1 patch text/plain 12466 beidson 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