Bug 162975 – LayoutTest http/tests/cache/disk-cache/memory-cache-revalidation-updates-disk-cache.html is a flaky failure

• Component: New Bugs
• Status: RESOLVED DUPLICATE

[Ryan Haddad]

LayoutTest http/tests/cache/disk-cache/memory-cache-revalidation-updates-disk-cache.html is a flaky failure

https://build.webkit.org/builders/Apple%20Sierra%20Debug%20WK2%20(Tests)/builds/194

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fcache%2Fdisk-cache%2Fmemory-cache-revalidation-updates-disk-cache.html

--- /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/http/tests/cache/disk-cache/memory-cache-revalidation-updates-disk-cache-expected.txt
+++ /Volumes/Data/slave/sierra-debug-tests-wk2/build/layout-test-results/http/tests/cache/disk-cache/memory-cache-revalidation-updates-disk-cache-actual.txt
@@ -10,7 +10,7 @@
 Clear the memory cache and load again, it should load from the disk cache *without* revalidation.
 response headers: {"Expires":"now(0)","ETag":"match"}
 response's 'Expires' header is overriden by future date in 304 response
-response source: Disk cache
+response source: Disk cache after validation
 
 PASS successfullyParsed is true

[Ryan Haddad]

Marked as flaky in http://trac.webkit.org/projects/webkit/changeset/206931

[Matt Lewis]

This is still happening:

https://build.webkit.org/results/Apple%20High%20Sierra%20Release%20WK2%20(Tests)/r227522%20(2474)/results.html
https://build.webkit.org/builders/Apple%20High%20Sierra%20Release%20WK2%20(Tests)/builds/2474

Adjusted expectations:
https://trac.webkit.org/changeset/227565/webkit

[Shawn Roberts]

Test has been showing up on dashboard with iOS Simulator Release and Debug.

Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fcache%2Fdisk-cache%2Fmemory-cache-revalidation-updates-disk-cache.html

Reproducible with:

run-webkit-tests http/tests/cache/disk-cache/memory-cache-revalidation-updates-disk-cache.html --iterations 500 --child-process 1 --ios-simulator --no-retry --exit-after-n-failures=10

Will fail approximately 1 in 500 iterations. 

Unable to duplicate locally with Debug builds.

Diff for Release:

--- /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/http/tests/cache/disk-cache/memory-cache-revalidation-updates-disk-cache-expected.txt
+++ /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/http/tests/cache/disk-cache/memory-cache-revalidation-updates-disk-cache-actual.txt
@@ -10,7 +10,7 @@
 Clear the memory cache and load again, it should load from the disk cache *without* revalidation.
 response headers: {"Expires":"now(0)","ETag":"match"}
 response's 'Expires' header is overriden by future date in 304 response
-response source: Disk cache
+response source: Disk cache after validation
 
 PASS successfullyParsed is true
 

Updated test expectations to include iOS Sim in https://trac.webkit.org/changeset/243549/webkit

[Ben Schwartz]

*** This bug has been marked as a duplicate of bug 172662 ***