public boolean isRemainingTablesCheckpointed() {
        return isRemainingTablesCheckpointed;
    }
Whether the remaining tables are keep when snapshot state.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/mysql-cdc/src/main/java/org/apache/inlong/sort/cdc/mysql/source/assigners/state/SnapshotPendingSplitsState.java