[jira] [Created] (FLINK-26176) Scala savepoint migration tests don't run as configured (not testing RocksDB savepoints)

["Sebastian Mattheis (Jira)" <ji...@apache.org>]

Sebastian Mattheis created FLINK-26176:
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             Summary: Scala savepoint migration tests don't run as configured (not testing RocksDB savepoints)
                 Key: FLINK-26176
                 URL: https://issues.apache.org/jira/browse/FLINK-26176
             Project: Flink
          Issue Type: Bug
          Components: Tests
    Affects Versions: 1.14.3, 1.13.5, 1.12.7, 1.11.6, 1.10.3, 1.9.3
            Reporter: Sebastian Mattheis


The following Scala integration test cases in flink-tests:
 * flink-tests/src/test/scala/org/apache/flink/api/scala/migration/StatefulJobSavepointMigrationITCase.scala
 * flink-tests/src/test/scala/org/apache/flink/api/scala/migration/StatefulJobWBroadcastStateMigrationITCase.scala

are supposed and configured to test migration of savepoints of the RocksDB, Memory, and HashMap state backend between minor version upgrades (1.x -> 1.y). However, the test methods (in both test cases), which are
 * testCreateSavepoint and testRestoreSavepoint
 * testCreateSavepointWithBroadcastState and testRestoreSavepointWithBroadcast

do set the state backend to use only MemoryStateBackend and overwrite any previous (correct according to test configuration) setting of the state backend.

The consequence is:
 * tests run only with MemoryStateBackend
 * previous test resources, i.e., savepoints for RocksDB/HashMap states of versions (1.3-1.14), are corrputed

Proposed solution;
 * fix the configuration
 * delete corrupted savepoints
 * recreate savepoints for older versions OR omit test runs for older versions



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