executor: show operators' disk consumption in results of EXPLAIN ANALYZE

[Reminiscent]

What problem does this PR solve?

Close #12625
Add a new column named disk in the results of EXPLAIN ANALYZE to display memory consumption of operators.

After this PR, you can see:

mysql> explain analyze select avg(t1.a) from t1, t2 where t1.b = t2.b group by t1.a;
+------------------------------+-------+-----------+------------------------------------------------------------------+--------------------------------------------------------------+-------------+-----------+
| id                           | count | task      | operator info                                                    | execution info                                               | memory      | disk      |
+------------------------------+-------+-----------+------------------------------------------------------------------+--------------------------------------------------------------+-------------+-----------+
| HashAgg_11                   | 7.19  | root      | group by:Column#9, funcs:avg(Column#8)                           | time:1.409344ms, loops:2, rows:3                             | N/A         | N/A       |
| └─Projection_20              | 11.24 | root      | cast(Column#1), Column#1                                         | time:824.972µs, loops:2, rows:27                             | N/A         | N/A       |
|   └─HashLeftJoin_12          | 11.24 | root      | inner join, inner:TableReader_19, equal:[eq(Column#2, Column#5)] | time:774.511µs, loops:2, rows:27                             | 8.234375 KB | 144 Bytes |
|     ├─TableReader_16         | 8.99  | root      | data:Selection_15                                                | time:384.076µs, loops:2, rows:9, rpc num:1, time:911.419µs   | 284 Bytes   | N/A       |
|     │ └─Selection_15         | 8.99  | cop[tikv] | not(isnull(Column#2))                                            | time:234.589µs, loops:10, rows:9                             | N/A         | N/A       |
|     │   └─TableScan_14       | 9.00  | cop[tikv] | table:t1, range:[-inf,+inf], keep order:false, stats:pseudo      | time:216.418µs, loops:10, rows:9                             | N/A         | N/A       |
|     └─TableReader_19         | 8.99  | root      | data:Selection_18                                                | time:281.396µs, loops:2, rows:9, rpc num:1, time:385.191µs   | 201 Bytes   | N/A       |
|       └─Selection_18         | 8.99  | cop[tikv] | not(isnull(Column#5))                                            | time:205.323µs, loops:10, rows:9                             | N/A         | N/A       |
|         └─TableScan_17       | 9.00  | cop[tikv] | table:t2, range:[-inf,+inf], keep order:false, stats:pseudo      | time:189.869µs, loops:10, rows:9                             | N/A         | N/A       |
+------------------------------+-------+-----------+------------------------------------------------------------------+--------------------------------------------------------------+-------------+-----------+
9 rows in set (0.01 sec)

What is changed and how it works?

Check List

Tests

• Unit test

[Reminiscent]

/run-unit-test

[codecov]

Codecov Report

Merging #13764 into master will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             master     #13764   +/-   ##
===========================================
  Coverage   80.3169%   80.3169%           
===========================================
  Files           474        474           
  Lines        118264     118264           
===========================================
  Hits          94986      94986           
  Misses        15847      15847           
  Partials       7431       7431

[Reminiscent]

/run-all-tests

[Reminiscent]

/run-all-tests

[SunRunAway]

LGTM

[qw4990]

LGTM

[sre-bot]

/run-all-tests