objectbox / objectbox/objectbox-java
LinkageError when two programs use ObjectBox and share the same .dll.
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- Dominant language
- Java
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Description
Describe the bug
A Java program will not work if another Java program uses ObjectBox.
Basic info:
- ObjectBox version: 3.2.1
- Reproducibility: always
- Device: Desktop Java
- OS: Windows 10, Windows 11 & Linux
To Reproduce
See the Is there anything special about your app?.
Probable way to reproduce the behaviour without using Spigot plugins:
- Create two projects that use ObjectBox and place them in the same folder.
- Execute each application
- See error
Way to reproduce the behaviour USING Spigot plugins:
- Create two Spigot plugins that use ObjectBox.
- Place the plugins under the
\pluginsfolder. - Start the server & see the error for one plugin.
Expected behavior
ObjectBox should be able to use different .dll files in order for this error not to happen. This could be worked around by providing a method to specify the location of the .dll file, https://github.com/objectbox/objectbox-java/issues/973
Logs, stack traces
[15:34:38 WARN]: Caused by: java.lang.LinkageError: [ObjectBox] Loading native library failed, please report this to us: vendor=Oracle Corporation,os=linux,os.arch=amd64,model=64,linux=true,machine=x86_64
[21:23:30 WARN]: java.io.FileNotFoundException: objectbox-jni-windows-x64.dll (El proceso no tiene acceso al archivo porque está siendo utilizado por otro proceso)
[21:23:30 WARN]: at java.base/java.io.FileOutputStream.open0(Native Method)
[21:23:30 WARN]: at java.base/java.io.FileOutputStream.open(FileOutputStream.java:293)
[21:23:30 WARN]: at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:235)
[21:23:30 WARN]: at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:184)
[21:23:30 WARN]: at Plugin-1.0-SNAPSHOT.jar//io.objectbox.internal.NativeLibraryLoader.checkUnpackLib(NativeLibraryLoader.java:227)
[21:23:30 WARN]: at Plugin-1.0-SNAPSHOT.jar//io.objectbox.internal.NativeLibraryLoader.<clinit>(NativeLibraryLoader.java:75)
[21:23:30 WARN]: at Plugin-1.0-SNAPSHOT.jar//io.objectbox.BoxStore.<init>(BoxStore.java:262)
[21:23:30 WARN]: at Plugin-1.0-SNAPSHOT.jar//io.objectbox.BoxStoreBuilder.build(BoxStoreBuilder.java:516)
[21:23:30 WARN]: at Plugin-1.0-SNAPSHOT.jar//dev.ckblck.referrals.logic.reward.storage.pending.PendingRewardDatabase.loadDatabase(PendingRewardDatabase.java:79)
[21:23:30 WARN]: at Plugin-1.0-SNAPSHOT.jar//dev.ckblck.referrals.logic.reward.storage.pending.PendingRewardDatabase.<init>(PendingRewardDatabase.java:30)
[21:23:30 WARN]: at Plugin-1.0-SNAPSHOT.jar//dev.ckblck.referrals.Plugin.lambda$onEnable$0(Plugin.java:82)
[21:23:30 WARN]: at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804)
[21:23:30 WARN]: at java.base/java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796)
[21:23:30 WARN]: at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
[21:23:30 WARN]: at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
[21:23:30 WARN]: at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
[21:23:30 WARN]: at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
[21:23:30 WARN]: at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)
[21:23:30 WARN]: java.util.concurrent.CompletionException: java.lang.LinkageError: [ObjectBox] Loading native library failed, please report this to us: vendor=Amazon.com Inc.,os=windows 10,os.arch=amd64,model=64,linux=false,machine=null
[21:23:30 WARN]: at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
[21:23:30 WARN]: at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
[21:23:30 WARN]: at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1807)
[21:23:30 WARN]: at java.base/java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796)
[21:23:30 WARN]: at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
[21:23:30 WARN]: at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
[21:23:30 WARN]: at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
[21:23:30 WARN]: at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
[21:23:30 WARN]: at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)
[21:23:30 WARN]: Caused by: java.lang.LinkageError: [ObjectBox] Loading native library failed, please report this to us: vendor=Amazon.com Inc.,os=windows 10,os.arch=amd64,model=64,linux=false,machine=null
Additional context
- Is there anything special about your app?
I'm using ObjectBox for Spigot Java plugins. In this context, theobjectbox-jni-windows-x64is being shared for all the plugins that use ObjectBox, and as far as I'm aware, there is no viable way to modify the location of theobjectbox-jni-windows-x64file for each instance. Possibly related with https://github.com/objectbox/objectbox-java/issues/973
The Spigot standalone loads each plugin and when two plugins are using ObjectBox, the error occurrs.
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with io.objectbox.internal.NativeLibraryLoader.checkUnpackLib at line 227 and the related issue #973, then reproduce two ObjectBox applications or Spigot plugins sharing the native library on Windows and Linux. Done means both users can initialize ObjectBox without LinkageError or FileNotFoundException when their native libraries are loaded concurrently.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- databases
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 42/100