2823e4daba
SHOW DATA SKEW FROM tbl PARTITION(p1) to view the data distribution of a specified partition ``` mysql> admin show data skew from tbl1 partition(tbl1); +-----------+-------------+-------+---------+ | BucketIdx | AvgDataSize | Graph | Percent | +-----------+-------------+-------+---------+ | 0 | 0 | | 100.00% | +-----------+-------------+-------+---------+ 1 row in set (0.01 sec) ``` Also modify the result of `admin show replica distribution`, add replica size distribution ``` mysql> admin show replica distribution from tbl1 partition(tbl1); +-----------+------------+-------------+----------+------------+-----------+-------------+ | BackendId | ReplicaNum | ReplicaSize | NumGraph | NumPercent | SizeGraph | SizePercent | +-----------+------------+-------------+----------+------------+-----------+-------------+ | 10002 | 1 | 0 | > | 100.00% | | 100.00% | +-----------+------------+-------------+----------+------------+-----------+-------------+ ```
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title, language
| title | language |
|---|---|
| ADMIN SHOW DATA SKEW | en |
ADMIN SHOW DATA SKEW
description
This statement is used to view the data skew of a table or a partition.
grammar:
ADMIN SHOW DATA SKEW FROM [db_name.]tbl_name [PARTITION (p1)];
Description:
1. Only one partition must be specified. For non-partitioned tables, the partition name is the same as the table name.
2. The result will show the data volume of each bucket under the specified partition, and the proportion of the data volume of each bucket in the total data volume.
example
1. View the data skew of the table
ADMIN SHOW DATA SKEW FROM db1.test PARTITION(p1);
keyword
ADMIN, SHOW, DATA, SKEW