@Override
 public Map<TableName, SequenceValue> initSequences(
     String tenantId, List<TableName> sequences, long timestamp) throws SQLException {
   Map<TableName, SequenceValue> sequenceMap = Maps.newHashMapWithExpectedSize(sequences.size());
   for (TableName name : sequences) {
     PSequence sequence = metaData.getSequence(name);
     if (sequence == null) {
       throw new SequenceNotFoundException(name.getSchemaName(), name.getTableName());
     }
     SequenceValue existingValue = sequenceMap.get(name);
     SequenceValue value = new SequenceValue(sequence);
     if (existingValue != null) {
       value.currentValue = existingValue.currentValue;
       value.nextValue = existingValue.nextValue;
     }
     sequenceMap.put(name, value);
   }
   return sequenceMap;
 }
 @Override
 public Long createSequence(
     String tenantId,
     String schemaName,
     String sequenceName,
     long startWith,
     long incrementBy,
     long timestamp)
     throws SQLException {
   TableName tableName = TableName.create(schemaName, sequenceName);
   if (metaData.getSequence(tableName) != null) {
     return null;
   }
   addSequence(tableName, new PSequenceImpl(incrementBy, startWith, timestamp));
   SequenceValue value = new SequenceValue(incrementBy, startWith, timestamp);
   value.currentValue = startWith;
   value.nextValue = startWith;
   sequenceMap.put(tableName, value);
   return HConstants.LATEST_TIMESTAMP;
 }