[#MCOL-4802] information_schema.columnstore_files contains NULL for both FILE_SIZE and COMPRESSED_FILE

create table c1(i int)engine=columnstore;

insert into c1 values (42);

MariaDB [test]> select * from information_schema.columnstore_files;

+-----------+------------+--------------+--------------------------------------------------------------------------------+-----------+----------------------+

| OBJECT_ID | SEGMENT_ID | PARTITION_ID | FILENAME                                                                       | FILE_SIZE | COMPRESSED_DATA_SIZE |

+-----------+------------+--------------+--------------------------------------------------------------------------------+-----------+----------------------+

|      3001 |          0 |            0 | /var/lib/columnstore/data1/000.dir/000.dir/011.dir/185.dir/000.dir/FILE000.cdf |      NULL |                 NULL |

+-----------+------------+--------------+--------------------------------------------------------------------------------+-----------+----------------------+

get_file_sizes() function pushes char[XXX] into ByteStream. BS incorrectly picks the operator>>() method for the char[XXX]. This causes WE to return an error deserializing from BS. get_file_sizes() logic doesn't take WE return code into account and siliently returns success setting FILE_SIZE and COMPRESSED_DATA_SIZE to 0.

[MCOL-4802] information_schema.columnstore_files contains NULL for both FILE_SIZE and COMPRESSED_FILE_SIZE Created: 2021-07-06 Updated: 2021-07-08 Resolved: 2021-07-07
Status:	Closed
Project:	MariaDB ColumnStore
Component/s:	ExeMgr, PrimProc
Affects Version/s:	6.1.1
Fix Version/s:	6.1.1

[MCOL-4802] information_schema.columnstore_files contains NULL for both FILE_SIZE and COMPRESSED_FILE_SIZE Created: 2021-07-06 Updated: 2021-07-08 Resolved: 2021-07-07