BadVersionException OR N5realm11SharedGroup10BadVersionE

[telvinqburst]

Goal

I am trying to delete realm file programmatically and create new realm file each time a new user logs into the app. When I create a new realm file with same name as previously deleted file and try to use realm defatult instance to query in the new realm file, crash occurs.

Actual Results

E/REALM: uncaught exception in notifier thread: N5realm11SharedGroup10BadVersionE: std::exception
    
    --------- beginning of crash
11-22 11:39:07.678 6631-6728/com.abc.abc A/libc: Fatal signal 6 (SIGABRT), code -6 in tid 6728 (hcare.foresight)
11-22 11:39:07.747 6927-6927/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
    Build fingerprint: 'google/sdk_google_phone_x86/generic_x86:7.0/NYC/4409132:user/release-keys'
    Revision: '0'
    ABI: 'x86'
    pid: 6631, tid: 6728, name: abc.abc  >>> com.abc.abc <<<
    signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
        eax 00000000  ebx 000019e7  ecx 00001a48  edx 00000006
        esi 88c9b978  edi 88c9b920
        xcs 00000073  xds 0000007b  xes 0000007b  xfs 0000003b  xss 0000007b
        eip a7ba6424  ebp 88c9b778  esp 88c9b71c  flags 00000292
11-22 11:39:07.767 6927-6927/? A/DEBUG: backtrace:
        #00 pc ffffe424  [vdso:a7ba6000] (__kernel_vsyscall+16)
        #01 pc 0007a00c  /system/lib/libc.so (tgkill+28)
        #02 pc 00075855  /system/lib/libc.so (pthread_kill+85)
        #03 pc 0002782a  /system/lib/libc.so (raise+42)
        #04 pc 0001ee06  /system/lib/libc.so (abort+86)
        #05 pc 00271ba4  /data/app/com.abc.abc-1/lib/x86/librealm-jni.so (_ZN9__gnu_cxx27__verbose_terminate_handlerEv+452)
        #06 pc 0023f217  /data/app/com.abc.abc-1/lib/x86/librealm-jni.so (_ZN10__cxxabiv111__terminateEPFvvE+23)
        #07 pc 0023f2af  /data/app/com.abc.abc-1/lib/x86/librealm-jni.so (_ZSt9terminatev+31)
        #08 pc 002707ed  /data/app/com.abc.abc-1/lib/x86/librealm-jni.so
        #09 pc 00074fb2  /system/lib/libc.so (_ZL15__pthread_startPv+210)
11-22 11:39:07.768 6927-6927/? A/DEBUG:     #10 pc 0002026e  /system/lib/libc.so (__start_thread+30)
        #11 pc 0001e046  /system/lib/libc.so (__bionic_clone+70) -->

Steps & Code to Reproduce

Scenario:
1, First realm file is created - "USER1.realm"
2, Delete "USER1.realm" and create new realm file for user 2 - "USER2.realm"
3, Delete "USER2.realm" and create new realm file for user 1 - "USER1.realm"
4, Crash happens on using Realm.getDefaultInstance().

realmConfiguration = new RealmConfiguration.Builder()
.name(encryptKeyProvider + ".realm")
.initialData(new InitialData())
.schemaVersion(REALM_SCHEMA_VERSION)
.encryptionKey(key)
.deleteRealmIfMigrationNeeded()
.build();

Version of Realm and tooling

Realm version(s): 5.8.0

Realm Sync feature enabled: No

Android Studio version: 3.1.4

Android Build Tools version: 27

Gradle version: 3.2.1

Which Android version and device(s): For all device

[Zhuinden]

I assume the Realm file is deleted but it hadn't been closed properly first on all threads and all instances.

[telvinqburst]

@Zhuinden Can you share any reference or documentation on who to properly close Realm instances?

[Zhuinden]

https://realm.io/docs/java/latest/#closing-realms

[cmelchior]

@telvinqburst How exactly are you deleting the files?
If you use Realm.deleteRealm(config) it should warn you if it isn't safe to close the Realm. Trying to do it manually is undefined behavior, but I suspect the error you see could be because of it.

[cmelchior]

Closing due to inactivity. Please re-open if this is still an issue.

[Yashshree]

i am also getting the same issue.
ext.realm_version = '0.85.1'
classpath 'io.realm:realm-gradle-plugin:5.0.0'
please help

[Zhuinden]

So is it 0.85.0 or 5.0.0? Why do you have 2 different versions of Realm in your project??