Bug 579600 - Error markers not disappearing in Project Explorer
Summary: Error markers not disappearing in Project Explorer
Status: NEW
Alias: None
Product: Platform
Classification: Eclipse Project
Component: UI (show other bugs)
Version: 4.19   Edit
Hardware: PC Linux
: P3 normal with 9 votes (vote)
Target Milestone: ---   Edit
Assignee: Platform-UI-Inbox CLA
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Reported: 2022-04-06 07:34 EDT by Liviu Enache CLA
Modified: 2022-04-06 07:34 EDT (History)
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Attachments
Project used to recreate the bug (5.00 KB, application/x-zip-compressed)
2022-04-06 07:34 EDT, Liviu Enache CLA 		no flags Details
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Description Liviu Enache CLA 2022-04-06 07:34:55 EDT 
Created attachment 288397 [details]
Project used to recreate the bug

Error markers present when deleting a project from the Explorer still appear when re-opening the project after fixing the errors outside of Eclipse.

Recreate using the attached project:
1. Open the "Markers_test" project and insert an error in "SomeClass.java".
2. Wait for the error markers to appear inside the Project Explorer.
3. Delete the project from the Project Explorer.
4. Fix the error outside of Eclipse using a text editor.
5. Re-open the project from the filesystem.

The error marker should still be visible on the project's icon. A manual refresh does not fix it.

If "Refresh on access" is enabled, accessing the file from step 1 fixes the problem. Otherwise, another error must be added and fixed afterwards in the same file as step 1.

The problem seems to be related to a cache found in "NestedProjectsProblemsModel.java", which holds problem severities for resources and is perhaps not properly updated in some corner cases.