Github user parthchandra commented on a diff in the pull request:

    https://github.com/apache/drill/pull/592#discussion_r79721140
  
    --- Diff: 
exec/java-exec/src/main/java/org/apache/drill/exec/store/ischema/InfoSchemaRecordGenerator.java
 ---
    @@ -290,28 +290,30 @@ public Tables(OptionManager optionManager) {
           return new PojoRecordReader<>(Records.Table.class, 
records.iterator());
         }
     
    -    @Override
    -    public void visitTables(String schemaPath, SchemaPlus schema) {
    +    @Override public void visitTables(String schemaPath, SchemaPlus 
schema) {
           final AbstractSchema drillSchema = 
schema.unwrap(AbstractSchema.class);
    +      final List<Pair<String, TableType>> tableNamesAndTypes = drillSchema
    +          
.getTableNamesAndTypes(optionManager.getOption(ExecConstants.ENABLE_BULK_LOAD_TABLE_LIST),
    +              
(int)optionManager.getOption(ExecConstants.BULK_LOAD_TABLE_LIST_BULK_SIZE));
     
    -      final List<String> tableNames = 
Lists.newArrayList(schema.getTableNames());
    -      final List<Pair<String, ? extends Table>> tableNameToTables;
    -      
if(optionManager.getOption(ExecConstants.ENABLE_BULK_LOAD_TABLE_LIST)) {
    -        tableNameToTables = 
drillSchema.getTablesByNamesByBulkLoad(tableNames);
    -      } else {
    -        tableNameToTables = drillSchema.getTablesByNames(tableNames);
    -      }
    -
    -      for(Pair<String, ? extends Table> tableNameToTable : 
tableNameToTables) {
    -        final String tableName = tableNameToTable.getKey();
    -        final Table table = tableNameToTable.getValue();
    +      for (Pair<String, TableType> tableNameAndType : tableNamesAndTypes) {
    +        final String tableName = tableNameAndType.getKey();
    +        final TableType tableType = tableNameAndType.getValue();
             // Visit the table, and if requested ...
    -        if(shouldVisitTable(schemaPath, tableName)) {
    -          visitTable(schemaPath, tableName, table);
    +        if (shouldVisitTable(schemaPath, tableName)) {
    +          visitTableWithType(schemaPath, tableName, tableType);
             }
           }
         }
     
    +    public boolean visitTableWithType(String schemaName, String tableName, 
TableType type) {
    +      Preconditions
    +          .checkNotNull(type, "Error. Type information for table %s.%s 
provided is null.", schemaName,
    +              tableName);
    +      records.add(new Records.Table(IS_CATALOG_NAME, schemaName, 
tableName, type.toString()));
    +      return false;
    --- End diff --
    
    <sigh/> to keep it similar to visitTable which does the same, 
unnecessarily. I suppose I could change it to return void.


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