Bug 1057079
| Summary: | Intermittent exceptions when creating a new business process | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Retired] JBoss BPMS Platform 6 | Reporter: | Zuzana Krejčová <zkrejcov> | ||||
| Component: | jBPM Designer | Assignee: | Tihomir Surdilovic <tsurdilo> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Zuzana Krejčová <zkrejcov> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | unspecified | CC: | kverlaen, lpetrovi, mbaluch, zkrejcov | ||||
| Target Milestone: | ER1 | ||||||
| Target Release: | 6.0.2 | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2014-08-06 19:49:54 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
|
||||||
I've been trying to reproduce but I couldn't... can you provide more info how to? Maybe more info about OS, browser... (In reply to Alexandre Porcelli from comment #1) > I've been trying to reproduce but I couldn't... can you provide more info > how to? Maybe more info about OS, browser... These messages appear with the addition of various *.fw, *.png, *.json and such files to 'global' folder (which is a by product of creating a new process): 14:15:35,708 INFO [org.guvnor.common.services.builder.ResourceChangeIncrementalBuilder] (org.uberfire.backend.server.IOWatchServiceNonDotImpl(WatchService{FileSystem=git://localhost:9418/repository1 ssh://localhost:8001/repository1})) Incremental build request received for: default://master@repository1/project1/global/backbonejsinclude.fw (added). 14:15:35,740 ERROR [org.jbpm.designer.web.preprocessing.impl.JbpmPreprocessingUnit] (http-/127.0.0.1:8080-5) org.eclipse.jgit.api.errors.ConcurrentRefUpdateException: Could not lock HEAD. RefUpdate return code was: LOCK_FAILURE Description of ConcurrentRefUpdateException: "Exception thrown when a command wants to update a ref but failed because another process is accessing (or even also updating) the ref." There is a lot of files being created at pretty much the same time, or so close to each other (time-wise) that it might seem like concurrent access. It is possible that you won't see this if you already have a process in your project, created via the business-central - because in such a case, you will probably already have all those files in the 'global' folder. Asked Tiho to add batch updates in order to avoid multiple commits (and avoid git corruptions). added batch updates for preprocessing steps. commits in master and 6.0.x designer branches Verified with ER2. |
Created attachment 854367 [details] part of the server log covering the process creation, showing the whole stacktrace Description of problem: When creating a new business process, using the Designer, sometimes you get these in the server log: ERROR [stderr] org.uberfire.java.nio.IOException: java.lang.RuntimeException: org.eclipse.jgit.api.errors.ConcurrentRefUpdateException: Could not lock HEAD. RefUpdate return code was: LOCK_FAILURE ERROR [stderr] at org.uberfire.java.nio.fs.jgit.JGitFileSystemProvider.createDirectory(JGitFileSystemProvider.java:892) ERROR [stderr] at org.jbpm.designer.repository.vfs.VFSRepository.createIfNotExists(VFSRepository.java:523) ERROR [stderr] at org.jbpm.designer.repository.vfs.VFSRepository.createAsset(VFSRepository.java:341) ... Followed by: ERROR [org.jbpm.designer.web.preprocessing.impl.JbpmPreprocessingUnit] java.lang.RuntimeException: org.eclipse.jgit.api.errors.ConcurrentRefUpdateException: Could not lock HEAD. RefUpdate return code was: LOCK_FAILURE ERROR [org.jbpm.designer.web.preprocessing.impl.JbpmPreprocessingUnit] java.lang.RuntimeException: java.lang.RuntimeException: java.io.IOException: Creating directory /home/zkrejcov/.niogit/repository1.git/objects/d7 failed ERROR [org.jbpm.designer.web.preprocessing.impl.JbpmPreprocessingUnit] java.io.IOException: Creating directory /home/zkrejcov/.niogit/repository1.git/objects/0a failed and similar. The process is created anyway. Version-Release number of selected component (if applicable): BPMS 6.0 CR1