public Map<String, SchemalessSnapshotSplit> getAssignedSplits() {
        return assignedSplits;
    }
Whether the remaining tables are keep when snapshot state.
inlong-sort/sort-flink/cdc-base/src/main/java/org/apache/inlong/sort/cdc/base/source/assigner/state/SnapshotPendingSplitsState.java