[REQUIRED] Step 2: Describe your environment

• Android Studio version: 3.4.2
• Firebase Component: firebase-crashlytics
• Component version:
  FIREBASE_ANALYTICS = "17.4.0"
  FIREBASE_MESSAGING = "20.1.6"
  FIREBASE_CRASHLYTICS = "17.0.0"

[REQUIRED] Step 3: Describe the problem

We have a significant number of crash reports in crashlytics with SQLiteException

duplicate column name: extras (code 1 SQLITE_ERROR): , while compiling: ALTER TABLE transport_contexts ADD COLUMN extras BLOB android.database.sqlite.SQLiteConnection.nativePrepareStatement

We upgraded from Fabric Crashlytics SDK to Firebase Crashlytics SDK in March and downgrade to Fabric Crashlytics SDK. When we upgrade from Fabric Crashlytics SDK to Firebase Crashlytics SDK this week, the crash happened.

Log
Fatal Exception: android.database.sqlite.SQLiteException: duplicate column name: extras (code 1 SQLITE_ERROR): , while compiling: ALTER TABLE transport_contexts ADD COLUMN extras BLOB at android.database.sqlite.SQLiteConnection.nativePrepareStatement(SQLiteConnection.java) at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:903) at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:514) at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58) at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31) at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1770) at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1698) at com.google.android.datatransport.runtime.scheduling.persistence.SchemaManager.lambda$static$1(SchemaManager.java:97) at com.google.android.datatransport.runtime.scheduling.persistence.SchemaManager$$Lambda$2.upgrade(SchemaManager.java) at com.google.android.datatransport.runtime.scheduling.persistence.SchemaManager.upgrade(SchemaManager.java:182) at com.google.android.datatransport.runtime.scheduling.persistence.SchemaManager.onUpgrade(SchemaManager.java:152) at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:398) at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:298) at com.google.android.datatransport.runtime.scheduling.persistence.SQLiteEventStore$$Lambda$1.produce(SQLiteEventStore.java:2) at com.google.android.datatransport.runtime.scheduling.persistence.SQLiteEventStore.retryIfDbLocked(SQLiteEventStore.java:517) at com.google.android.datatransport.runtime.scheduling.persistence.SQLiteEventStore.getDb(SQLiteEventStore.java:82) at com.google.android.datatransport.runtime.scheduling.persistence.SQLiteEventStore.runCriticalSection(SQLiteEventStore.java:549) at com.google.android.datatransport.runtime.scheduling.jobscheduling.WorkInitializer.lambda$ensureContextsScheduled$1(WorkInitializer.java:54) at com.google.android.datatransport.runtime.scheduling.jobscheduling.WorkInitializer$$Lambda$1.run(WorkInitializer.java:1054) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.lang.Thread.run(Thread.java:764)

Steps to reproduce:

install version with firebase crashlytics SDK-> upgrade version to one without firebase crashlytics SDK-> upgrade version to one with firebase crashlytics SDK