Exception cleaning and unsetting batch mode on FS in JBoss BPMS 6.2.0
Environment
- Red Hat JBoss BPM Suite (BPMS) 6.1.0, 6.2.0
Issue
At random points while working with kie workbench, users get an error showing a modal dialog with "Unable to complete your request. The following exception occurred: Exception cleaning and unsetting batch mode on FS.." message.
The server.log file shows the following ERROR:
ERROR [org.uberfire.backend.server.io.watch.IOWatchServiceExecutorImpl] Unexpected error during WatchService events fire.: java.lang.RuntimeException: Exception cleaning and unsetting batch mode on FS.
at org.uberfire.io.impl.AbstractIOService.endBatch(AbstractIOService.java:173) [uberfire-io-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT]
at org.guvnor.inbox.backend.server.InboxBackendImpl.recordUserEditEvent(InboxBackendImpl.java:123) [guvnor-inbox-backend-6.4.0-SNAPSHOT.jar:6.4.0-SNAPSHOT]
at org.guvnor.inbox.backend.server.InboxBackendImpl$Proxy$$$_WeldClientProxy.recordUserEditEvent(InboxBackendImpl$Proxy$$$_WeldClientProxy.java) [guvnor-inbox-backend-6.4.0-SNAPSHOT.jar:6.4.0-SNAPSHOT]
...
Caused by: java.lang.RuntimeException: org.eclipse.jgit.errors.MissingObjectException: Missing tree 0088e577b06714a4357505f823089f2d65302ffc
at org.uberfire.java.nio.fs.jgit.util.JGitUtil.getDiff(JGitUtil.java:489)
...
Caused by: org.eclipse.jgit.errors.MissingObjectException: Missing tree 0088e577b06714a4357505f823089f2d65302ffc
at org.eclipse.jgit.internal.storage.file.WindowCursor.open(WindowCursor.java:149) [org.eclipse.jgit-3.7.1.201504261725-r.jar:3.7.1.201504261725-r]
or
ERROR [org.kie.workbench.common.screens.explorer.backend.server.ExplorerServiceHelper] Can't serialize user's state navigation: java.lang.RuntimeException: Exception cleaning and unsetting batch mode on FS.
at org.uberfire.io.impl.AbstractIOService.endBatch(AbstractIOService.java:173) [uberfire-io-0.8.0-SNAPSHOT.jar:0.8.0-SNAPSHOT]
at org.kie.workbench.common.screens.explorer.backend.server.ExplorerServiceHelper.store(ExplorerServiceHelper.java:344) [kie-wb-common-project-explorer-backend-6.4.0-SNAPSHOT.jar:6.4.0-SNAPSHOT]
at org.kie.workbench.common.screens.explorer.backend.server.ExplorerServiceHelper$1.run(ExplorerServiceHelper.java:290) [kie-wb-common-project-explorer-backend-6.4.0-SNAPSHOT.jar:6.4.0-SNAPSHOT]
(with the same 'caused by')
Resolution
Apply one-off patch 1 for BPMS 6.2.0.GA, or upgrade to the latest update release (once available). It is also fixed in the Updates available.
Root Cause
This is a bug in the product that has been found late in the release cycle during extensive testing of BPMS 6.2.0.GA.
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