[GitHub] incubator-carbondata pull request #729: [CARBONDATA-850] Fix the comment def...

[qiuchenjian-2]

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

    https://github.com/apache/incubator-carbondata/pull/729#discussion_r109631607
 
    --- Diff: format/src/main/thrift/carbondata.thrift ---
    @@ -1,223 +1,226 @@
    -/**
    - * Licensed to the Apache Software Foundation (ASF) under one
    - * or more contributor license agreements.  See the NOTICE file
    - * distributed with this work for additional information
    - * regarding copyright ownership.  The ASF licenses this file
    - * to you under the Apache License, Version 2.0 (the
    - * "License"); you may not use this file except in compliance
    - * with the License.  You may obtain a copy of the License at
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one or more
    + * contributor license agreements.  See the NOTICE file distributed with
    + * this work for additional information regarding copyright ownership.
    + * The ASF licenses this file to You under the Apache License, Version 2.0
    + * (the "License"); you may not use this file except in compliance with
    + * the License.  You may obtain a copy of the License at
      *
    - *     http://www.apache.org/licenses/LICENSE-2.0
    + *    http://www.apache.org/licenses/LICENSE-2.0
      *
    - * Unless required by applicable law or agreed to in writing,
    - * software distributed under the License is distributed on an
    - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    - * KIND, either express or implied.  See the License for the
    - * specific language governing permissions and limitations
    - * under the License.
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
      */
     
     /**
    - * File format description for the carbon file format
    + * File format description for the CarbonData file format
      */
     namespace java org.apache.carbondata.format
     
     include "schema.thrift"
     include "dictionary.thrift"
     
     /**
    -* Information about a segment, that represents one data load
    -*/
    + * Information about a segment, that represents one data load
    + */
     struct SegmentInfo{
    -    1: required i32 num_cols; // Number of columns in this load, because schema can evolve . TODO: Check whether this is really required
    +    1: required i32 num_cols; // Number of columns in this load, because schema can evolve, different segments may have different columns
         2: required list<i32> column_cardinalities; // Cardinality of columns
     }
     
     /**
    -* Btree index of one blocklet
    -*/
    + * Btree index of one blocklet
    + */
     struct BlockletBTreeIndex{
         1: required binary start_key; // Bit-packed start key of one blocklet
    -    2: required binary end_key; // Bit-packed start key of one blocklet
    +    2: required binary end_key; // Bit-packed end key of one blocklet
     }
     
     /**
    -* Min-max index of one blocklet
    -*/
    + * Min-max index of one blocklet
    + */
     struct BlockletMinMaxIndex{
         1: required list<binary> min_values; //Min value of all columns of one blocklet Bit-Packed
         2: required list<binary> max_values; //Max value of all columns of one blocklet Bit-Packed
     }
     
     /**
    -* Index of one blocklet
    -**/
    + * Index of one blocklet
    + */
     struct BlockletIndex{
         1: optional BlockletMinMaxIndex min_max_index;
         2: optional BlockletBTreeIndex b_tree_index;
     }
     
     /**
    -* Sort state of one column
    -*/
    + * Sort state of one column
    + */
     enum SortState{
         SORT_NONE = 0; // Data is not sorted
         SORT_NATIVE = 1; //Source data was sorted
         SORT_EXPLICIT = 2; // Sorted (ascending) when loading
     }
     
     /**
    -* Compressions supported by Carbon Data.
    -*/
    + * Compressions supported by CarbonData.
    + */
     enum CompressionCodec{
         SNAPPY = 0;
     }
     
     /**
    -* Represents the data of one dimension one dimension group in one blocklet
    -*/
    -// add a innger level placeholder for further I/O granulatity
    + * Represents the data of one column page or one column page group in one blocklet.
    --- End diff --
   
    And also  we can mention that we are currently not using it, we keep it as for future extend ability.


---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [hidden email] or file a JIRA ticket
with INFRA.
---