This repository was archived by the owner on Jan 9, 2025. It is now read-only.
This repository was archived by the owner on Jan 9, 2025. It is now read-only.
AfsExceptionExclusiveAttemptConflict: File is already used by a different exclusive user on restart #282
Description
Caused by: one.microstream.afs.exceptions.AfsExceptionExclusiveAttemptConflict: File is already used by a different exclusive user: one.microstream.afs.types.AFile$Default@6327b54d("storage/channel_3/transactions_3.sft"). Exclusive user: (java.lang.Thread@8674c87) Thread[MicroStream-StorageChannel-3,5,]. Attempting user: (java.lang.Thread@6a0b3fb) Thread[MicroStream-StorageChannel-3,5,main].
at one.microstream.afs.types.AccessManager$Default$2.handleExclusiveAttemptConflict(AccessManager.java:776)
at one.microstream.afs.types.AccessManager$Default.internalUseWriting(AccessManager.java:664)
at one.microstream.afs.types.AccessManager$Default.useWriting(AccessManager.java:497)
at one.microstream.afs.types.AFile.useWriting(AFile.java:108)
at one.microstream.afs.types.AFS.applyWriting(AFS.java:272)
at one.microstream.afs.types.AFS.applyWriting(AFS.java:262)
at one.microstream.afs.types.AFile.ensureExists(AFile.java:157)
at one.microstream.storage.types.StorageFileManager$Default.createTransactionsFile(StorageFileManager.java:1117)
at one.microstream.storage.types.StorageFileManager$Default.readTransactionsFile(StorageFileManager.java:727)
at one.microstream.storage.types.StorageFileManager$Default.readStorage(StorageFileManager.java:712)
at one.microstream.storage.types.StorageChannel$Default.readStorage(StorageChannel.java:745)
at one.microstream.storage.types.StorageChannelTaskInitialize$Default.internalProcessBy(StorageChannelTaskInitialize.java:195)
at one.microstream.storage.types.StorageChannelTaskInitialize$Default.internalProcessBy(StorageChannelTaskInitialize.java:1)
at one.microstream.storage.types.StorageChannelTask$Abstract.processBy(StorageChannelTask.java:222)
at one.microstream.storage.types.StorageChannel$Default.work(StorageChannel.java:422)
at one.microstream.storage.types.StorageChannel$Default.run(StorageChannel.java:509)
at java.lang.Thread.run(Thread.java:748)
After fixing #279 that exception gets reproducible thrown after restarting a storage several times if the continuous Backup is enabled.
The Exception is thrown because the AccessManager instance does not deregister the affected file on shutdown. At the next restart the error is caused.