Realm Migration ValidateConfiguration error (Configurations cannot be different if used to open the same file).

Goal

Realm Migration from schema version 1 to 2.

Expected Results

Migrate unsuccesful.

Actual Results

java.lang.IllegalArgumentException: Configurations cannot be different if used to open the same file. Cached configuration: realmDirectory: /data/data/in.novopay.leadr/files realmFileName : loansappsdk_db.realm canonicalPath: /data/data/in.novopay.leadr/files/loansappsdk_db.realm key: [length: 0] schemaVersion: 2 migration: com.khoslalabs.loansappsdk.common.RealmMigration@25 deleteRealmIfMigrationNeeded: false durability: FULL schemaMediator: io.realm.LoansAppSDKRealmModuleMediator@1d3477e8 readOnly: false New configuration: realmDirectory: /data/data/in.novopay.leadr/files realmFileName : loansappsdk_db.realm canonicalPath: /data/data/in.novopay.leadr/files/loansappsdk_db.realm key: [length: 0] schemaVersion: 1 migration: null deleteRealmIfMigrationNeeded: false durability: FULL schemaMediator: io.realm.LoansAppSDKRealmModuleMediator@1d3477e8 readOnly: false at io.realm.RealmCache.validateConfiguration(RealmCache.java:461) at io.realm.RealmCache.doCreateRealmOrGetFromCache(RealmCache.java:337) at io.realm.RealmCache.createRealmOrGetFromCache(RealmCache.java:284) at io.realm.Realm.getInstance(Realm.java:299) at com.khoslalabs.loansappsdk.common.CrashHandler.initRealm(CrashHandler.java:71) at com.khoslalabs.loansappsdk.common.CrashHandler.<init>(CrashHandler.java:57) at com.khoslalabs.loansappsdk.LoansAppSDK.<init>(LoansAppSDK.java:131) at com.khoslalabs.loansappsdk.LoansAppSDK.<init>(LoansAppSDK.java:45) at com.khoslalabs.loansappsdk.LoansAppSDK$Builder.build(LoansAppSDK.java:431) at com.khoslalabs.loansappsdk.LoansAppSDK.with(LoansAppSDK.java:194) at com.khoslalabs.mpinregistrationlibrary.AgentLoginActivity.initMlSdk(AgentLoginActivity.java:270) at com.khoslalabs.mpinregistrationlibrary.AgentLoginActivity.access$1500(AgentLoginActivity.java:95) at com.khoslalabs.mpinregistrationlibrary.AgentLoginActivity$12.onClick(AgentLoginActivity.java:927) at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:178) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:145) at android.app.ActivityThread.main(ActivityThread.java:7007) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)

Steps & Code to Reproduce

Tired normal debugging the above exception arises.

Code Sample

This is a library project*

public void migrate(DynamicRealm realm, long oldVersion, long newVersion) {
        RealmSchema realmObjectSchema = realm.getSchema();
        if(oldVersion == 1L) {
            RealmObjectSchema onetimeapp = realmObjectSchema.get("OneTimeApp");
            onetimeapp.removeField("uuid").removeField("customerId").removeField("partnerId").removeField("activity_at").removeField("uploaded_at");
            RealmObjectSchema onetimeappdata = realmObjectSchema.get("OneTimeAppData");
            onetimeappdata.removeField("uuid").removeField("customerId").removeField("partnerId").removeField("activity_at").removeField("uploaded_at");
            RealmObjectSchema onetimecall = realmObjectSchema.get("OneTimeCall");
            onetimecall.removeField("uuid").removeField("customerId").removeField("partnerId").removeField("activity_at").removeField("uploaded_at");
            RealmObjectSchema onetimecontact = realmObjectSchema.get("OneTimeContact");
            onetimecontact.removeField("uuid").removeField("customerId").removeField("partnerId").removeField("activity_at").removeField("uploaded_at");
            RealmObjectSchema onetimephone = realmObjectSchema.get("OneTimePhone");
            onetimephone.removeField("uuid").removeField("customerId").removeField("partnerId").removeField("activity_at").removeField("uploaded_at").addField("appVersion", String.class, new FieldAttribute[]{FieldAttribute.REQUIRED}).addField("isDualSim", Boolean.class, new FieldAttribute[]{FieldAttribute.REQUIRED});
            RealmObjectSchema onetimesms = realmObjectSchema.get("OneTimeSms");
            onetimesms.removeField("uuid").removeField("customerId").removeField("partnerId").removeField("activity_at").removeField("uploaded_at");
            RealmObjectSchema phone = realmObjectSchema.get("Phone");
            phone.addField("isDualSim", Boolean.class, new FieldAttribute[]{FieldAttribute.REQUIRED});
            ++oldVersion;
        }

    }

Realm realm = Realm.getInstance(realmConfiguration);

Schema Version 1 Realm Configuration:
RealmConfiguration realmConfiguration = new RealmConfiguration.Builder()
                .name("loansappsdk_db.realm")
                .modules(new LoansAppSDKRealmModule())
                .schemaVersion(1)
                .build();
        return realmConfiguration;

Schema Version 2 Realm Configuration:
RealmConfiguration realmConfiguration = new RealmConfiguration.Builder()
                .name("loansappsdk_db.realm")
                .modules(new LoansAppSDKRealmModule())
                .schemaVersion(2)
                .migration(new RealmMigration())
                .build();
        return realmConfiguration;

Version of Realm and tooling

Realm version(s): 3.4.0

Realm sync feature enabled: yes

Android Studio version: 3.0

Which Android version and device: 5.1.1 & Samsung j3

[vamshikhoslalabs]

@Zhuinden Added this

@Override public int hashCode() { return 37; }

@Override public boolean equals(Object o) { return (o instanceof RealmMigration); }

[cmelchior]

@vamshikhoslalabs I assume the above solved your question. If not, feel free to reopen.