Bug 1340928
| Summary: | UI traceback thrown after selecting any item from System tree (Cannot read property 'length' of undefined) | ||||||
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| Product: | [oVirt] ovirt-engine | Reporter: | Pavel Novotny <pnovotny> | ||||
| Component: | Backend.Core | Assignee: | Vojtech Szocs <vszocs> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Pavel Novotny <pnovotny> | ||||
| Severity: | medium | Docs Contact: | Alexander Wels <awels> | ||||
| Priority: | unspecified | ||||||
| Version: | 4.0.0 | CC: | awels, bugs, oourfali | ||||
| Target Milestone: | ovirt-4.0.0-rc3 | Flags: | rule-engine:
ovirt-4.0.0+
rule-engine: planning_ack+ rule-engine: devel_ack+ rule-engine: testing_ack+ |
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| Target Release: | 4.0.0 | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2016-07-05 07:49:37 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | UX | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | |||||||
| Bug Blocks: | 1324860 | ||||||
| Attachments: |
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@Pavel, thanks for posting the UI logs. This bug originates in WebAdmin GWT/Java code. I suspect the problematic code is in CommonModel#systemTree_ItemChanged method. > 1) Exception in attached ui.log is from Chromium 50.0.2661.102. > (Firefox exception was logged obfuscated, although debug symbols were installed and symbol map file for this browser permutation was present.) Hm, attached UI logs ("with Firefox 45.1.1 ESR") seem un-obfuscated to me (?) > 2) engine.log did not contain any WARN or ERROR messages relevant to this issue. This is by design. engine.log relates to backend code. ui.log relates to frontend code. (In reply to vszocs from comment #1) > @Pavel, thanks for posting the UI logs. > > This bug originates in WebAdmin GWT/Java code. I suspect the problematic > code is in CommonModel#systemTree_ItemChanged method. > > > 1) Exception in attached ui.log is from Chromium 50.0.2661.102. > > (Firefox exception was logged obfuscated, although debug symbols were installed and symbol map file for this browser permutation was present.) > > Hm, attached UI logs ("with Firefox 45.1.1 ESR") seem un-obfuscated to me (?) > You are right, the Firefox error message "c is undefined" confused me, because it looks quite cryptic. At least with comparison to Chromium's "Cannot read property 'length' of undefined". (In reply to Pavel Novotny from comment #2) > You are right, the Firefox error message "c is undefined" confused me, > because it looks quite cryptic. At least with comparison to Chromium's > "Cannot read property 'length' of undefined". Indeed, maybe it has to do with how Firefox vs. Chrome report actual JS errors in the browser's console. (The GWT/Java stack trace below that line seems to be identical for both browsers.) Thanks for confirming that UI stack trace de-obfuscation still works, I was worried that we have an issue there. Verified in ovirt-engine-dashboard-1.0.0-20160615git43298a4.el7ev.x86_64 rhevm-4.0.0.6-0.1.el7ev.noarch (build 4.0.0-19). Browsers: Firefox 45.2.0 ESR Firefox 47.0 Chromium 50.0.2661.102 Verified according to reproducer from comment 0. Selecting any item from the System tree no longer raises a UI exception. oVirt 4.0.0 has been released, closing current release. |
Created attachment 1162951 [details] ui.log with exception Description of problem: Selecting any item from System tree while focused on Dashboard tab causes UI exception to be thrown. On the other hand, UI still seems to work well. You are able to navigate through other tabs and do various actions as usual. Version-Release number of selected component (if applicable): ovirt-engine-4.1.0-0.0.master.20160529171307.git359707b.el7.centos.noarch ovirt-engine-dashboard-0.0.1-2.20160527git3bb1fe3.el7.centos.noarch Browsers: Chromium 50.0.2661.102 Firefox 45.1.1 ESR (Mozilla) How reproducible: 100% Steps to Reproduce: 1. Make sure Dashboard tab is active. 2. Click on 'Data Centers' node from System tree on the left (or any other tree node). 3. Actual results: UI exception is thrown with message "Cannot read property 'length' of undefined". See attached ui.log for details. Expected results: No UI exception. Additional info: 1) Exception in attached ui.log is from Chromium 50.0.2661.102. (Firefox exception was logged obfuscated, although debug symbols were installed and symbol map file for this browser permutation was present.) 2) engine.log did not contain any WARN or ERROR messages relevant to this issue. 3) If Dashboard tab is not active, no UI exception is thrown.