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  1. MariaDB ColumnStore
  2. MCOL-2052

IS.columnstore_files maximum contains incorrect number of records for any relation.

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 1.1.6, 1.2.2
    • Fix Version/s: 1.1.7, 1.2.3
    • Component/s: ExeMgr
    • Labels:
      None
    • Sprint:
      2019-01

      Description

      Both columnstore_info.table_usage() and infromation_schema.columnstore_files report incorrect disk space usage for a table. Consider:

      releasenum  
      root@c3ca474b665d:/git/cs-docker-tools/generator# du -sh /usr/local/mariadb/columnstore/data1/
      5,9G	/usr/local/mariadb/columnstore/data1/
       
      MariaDB [test]> call columnstore_info.table_usage('test', 'cs2');
      +--------------+------------+-----------------+-----------------+-------------+
      | TABLE_SCHEMA | TABLE_NAME | DATA_DISK_USAGE | DICT_DATA_USAGE | TOTAL_USAGE |
      +--------------+------------+-----------------+-----------------+-------------+
      | test         | cs2        | 396.02 MB       | 0.00 Bytes      | 396.02 MB   |
      +--------------+------------+-----------------+-----------------+-------------+
      1 row in set (0.03 sec)
       
      Query OK, 0 rows affected (0.03 sec)
       
      MariaDB [test]> 
       
       
      MariaDB [test]> select * from information_schema.columnstore_files;
      +-----------+------------+--------------+------------------------------------------------------------------------------------------+-----------+----------------------+
      | OBJECT_ID | SEGMENT_ID | PARTITION_ID | FILENAME                                                                                 | FILE_SIZE | COMPRESSED_DATA_SIZE |
      +-----------+------------+--------------+------------------------------------------------------------------------------------------+-----------+----------------------+
      |      3019 |          0 |            0 | /usr/local/mariadb/columnstore/data1/000.dir/000.dir/011.dir/203.dir/000.dir/FILE000.cdf | 103809024 |            103809024 |
      |      3019 |          1 |            0 | /usr/local/mariadb/columnstore/data1/000.dir/000.dir/011.dir/203.dir/000.dir/FILE001.cdf | 103817216 |            103817216 |
      |      3019 |          2 |            0 | /usr/local/mariadb/columnstore/data1/000.dir/000.dir/011.dir/203.dir/000.dir/FILE002.cdf | 103817216 |            103817216 |
      |      3019 |          3 |            0 | /usr/local/mariadb/columnstore/data1/000.dir/000.dir/011.dir/203.dir/000.dir/FILE003.cdf | 103817216 |            103817216 |
      +-----------+------------+--------------+------------------------------------------------------------------------------------------+-----------+----------------------+
      4 rows in set (0.03 sec)
      

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            Assignee:
            dleeyh Daniel Lee
            Reporter:
            drrtuy Roman
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              Dates

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              Updated:
              Resolved:

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