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[Feature] Collect the information statistics of the query hit (#18805)

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1. Show the query hit statistics for `baseall`

   ```sql
    MySQL [test_query_db]> show query stats from baseall;
    +-------+------------+-------------+
    | Field | QueryCount | FilterCount |
    +-------+------------+-------------+
    | k0    | 0          | 0           |
    | k1    | 0          | 0           |
    | k2    | 0          | 0           |
    | k3    | 0          | 0           |
    | k4    | 0          | 0           |
    | k5    | 0          | 0           |
    | k6    | 0          | 0           |
    | k10   | 0          | 0           |
    | k11   | 0          | 0           |
    | k7    | 0          | 0           |
    | k8    | 0          | 0           |
    | k9    | 0          | 0           |
    | k12   | 0          | 0           |
    | k13   | 0          | 0           |
    +-------+------------+-------------+
    14 rows in set (0.002 sec)

    MySQL [test_query_db]> select k0, k1,k2, sum(k3) from baseall  where k9 > 1 group by k0,k1,k2;
    +------+------+--------+-------------+
    | k0   | k1   | k2     | sum(`k3`)   |
    +------+------+--------+-------------+
    |    0 |    6 |  32767 |        3021 |
    |    1 |   12 |  32767 | -2147483647 |
    |    0 |    3 |   1989 |        1002 |
    |    0 |    7 | -32767 |        1002 |
    |    1 |    8 |    255 |  2147483647 |
    |    1 |    9 |   1991 | -2147483647 |
    |    1 |   11 |   1989 |       25699 |
    |    1 |   13 | -32767 |  2147483647 |
    |    1 |   14 |    255 |         103 |
    |    0 |    1 |   1989 |        1001 |
    |    0 |    2 |   1986 |        1001 |
    |    1 |   15 |   1992 |        3021 |
    +------+------+--------+-------------+
    12 rows in set (0.050 sec)

    MySQL [test_query_db]> show query stats from baseall;
    +-------+------------+-------------+
    | Field | QueryCount | FilterCount |
    +-------+------------+-------------+
    | k0    | 1          | 0           |
    | k1    | 1          | 0           |
    | k2    | 1          | 0           |
    | k3    | 1          | 0           |
    | k4    | 0          | 0           |
    | k5    | 0          | 0           |
    | k6    | 0          | 0           |
    | k10   | 0          | 0           |
    | k11   | 0          | 0           |
    | k7    | 0          | 0           |
    | k8    | 0          | 0           |
    | k9    | 1          | 1           |
    | k12   | 0          | 0           |
    | k13   | 0          | 0           |
    +-------+------------+-------------+
    14 rows in set (0.001 sec)
   ```

2. Show the query hit statistics summary for all the mv in a table

   ```sql
   MySQL [test_query_db]> show query stats from baseall all;
    +-----------+------------+
    | IndexName | QueryCount |
    +-----------+------------+
    | baseall   | 1          |
    +-----------+------------+
    1 row in set (0.005 sec)
   ```

3. Show the query hit statistics detail info for all the mv in a table

   ```sql
    MySQL [test_query_db]> show query stats from baseall all verbose;
    +-----------+-------+------------+-------------+
    | IndexName | Field | QueryCount | FilterCount |
    +-----------+-------+------------+-------------+
    | baseall   | k0    | 1          | 0           |
    |           | k1    | 1          | 0           |
    |           | k2    | 1          | 0           |
    |           | k3    | 1          | 0           |
    |           | k4    | 0          | 0           |
    |           | k5    | 0          | 0           |
    |           | k6    | 0          | 0           |
    |           | k10   | 0          | 0           |
    |           | k11   | 0          | 0           |
    |           | k7    | 0          | 0           |
    |           | k8    | 0          | 0           |
    |           | k9    | 1          | 1           |
    |           | k12   | 0          | 0           |
    |           | k13   | 0          | 0           |
    +-----------+-------+------------+-------------+
    14 rows in set (0.017 sec)
   ```

4. Show the query hit for a database

   ```sql
    MySQL [test_query_db]> show query stats for test_query_db;
    +----------------------------+------------+
    | TableName                  | QueryCount |
    +----------------------------+------------+
    | compaction_tbl             | 0          |
    | bigtable                   | 0          |
    | empty                      | 0          |
    | tempbaseall                | 0          |
    | test                       | 0          |
    | test_data_type             | 0          |
    | test_string_function_field | 0          |
    | baseall                    | 1          |
    | nullable                   | 0          |
    +----------------------------+------------+
    9 rows in set (0.005 sec)
   ```

5. Show query hit statistics for all the databases

   ```sql
    MySQL [(none)]> show query stats;
    +-----------------+------------+
    | Database        | QueryCount |
    +-----------------+------------+
    | test_query_db   | 1          |
    +-----------------+------------+
    1 rows in set (0.005 sec)
   ```
This commit is contained in:
Zhengguo Yang
2023-05-15 10:56:34 +08:00
committed by GitHub
parent 92bf485abd
commit 6748ae4a57
62 changed files with 3880 additions and 46 deletions
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13
fe/fe-common/src/main/java/org/apache/doris/common/Config.java
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@ -1902,7 +1902,7 @@ public class Config extends ConfigBase {
* This is to solve the case that user forgot the password.
*/
@ConfField(mutable = false)
public static boolean skip_localhost_auth_check = false;
public static boolean skip_localhost_auth_check = true;
@ConfField(mutable = true)
public static boolean enable_round_robin_create_tablet = false;
@ -1940,12 +1940,12 @@ public class Config extends ConfigBase {
@ConfField(mutable = true)
public static int max_instance_num = 128;
/**
* This config used for export/outfile.
* Whether delete all files in the directory specified by export/outfile.
* It is a very dangerous operation, should only be used in test env.
*/
@ConfField(mutable = false)
public static boolean enable_delete_existing_files = false;
/*
@ -1961,4 +1961,13 @@ public class Config extends ConfigBase {
*/
@ConfField
public static long stats_cache_size = 10_0000;
/**
* This configuration is used to enable the statistics of query information, which will record
* the access status of databases, tables, and columns, and can be used to guide the
* optimization of table structures
*
*/
@ConfField(mutable = true, masterOnly = false)
public static boolean enable_query_hit_stats = false;
}