[OAK-6193] IllegalStateException when closing the FileStore during garbage collection

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.7.8, 1.8.0
• Component/s: segment-tar
• Labels: gc
• Assignee: Francesco Mari
• Reporter: Michael Dürig
• Created: 09/May/17 11:52
• Updated: 04/Oct/19 17:52
• Resolved: 20/Sep/17 14:36

Description

When the file store is shut down during gc compaction is properly aborted. Afterwards it will trigger a cleanup cycle though, which runs concurrently to the proceeding shutdown potentially causing an ISE:

at com.google.common.base.Preconditions.checkState(Preconditions.java:134)
at org.apache.jackrabbit.oak.segment.file.TarWriter.close(TarWriter.java:333)
at org.apache.jackrabbit.oak.segment.file.TarWriter.createNextGeneration(TarWriter.java:376)
at org.apache.jackrabbit.oak.segment.file.FileStore.newWriter(FileStore.java:682)
at org.apache.jackrabbit.oak.segment.file.FileStore.access$1700(FileStore.java:100)
at org.apache.jackrabbit.oak.segment.file.FileStore$GarbageCollector.cleanup(FileStore.java:1069)
at org.apache.jackrabbit.oak.segment.file.FileStore$GarbageCollector.cleanupGeneration(FileStore.java:1195)
at org.apache.jackrabbit.oak.segment.file.FileStore$GarbageCollector.run(FileStore.java:803)
at org.apache.jackrabbit.oak.segment.file.FileStore.gc(FileStore.java:387)