hugegraph-cassandra/src/main/java/org/apache/hugegraph/backend/store/cassandra/CassandraFeatures.java
hugegraph-palo/src/main/java/org/apache/hugegraph/backend/store/palo/PaloFeatures.java

hugegraph-cassandra/src/main/java/org/apache/hugegraph/backend/store/cassandra/CassandraTables.java
hugegraph-palo/src/main/java/org/apache/hugegraph/backend/store/palo/PaloTables.java