Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/flink/pull/2781#discussion_r91076930
--- Diff:
flink-contrib/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBKeyedStateBackend.java
---
@@ -994,4 +1008,82 @@ private static int
compareKeyGroupsForByteArrays(byte[] a, byte[] b, int len) {
public File getInstanceBasePath() {
return instanceBasePath;
}
+
+ /**
+ * For backwards compatibility, remove again later!
+ */
+ @Deprecated
+ private void
restoreOldSavepointKeyedState(Collection<KeyGroupsStateHandle> restoreState)
throws Exception {
+
+ if (restoreState.isEmpty()) {
--- End diff --
Add a sanity check that the `restoreState` collection has zero or one
entries.
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