Using rowsets
rowsetsβ
Nameβ
rowsets
descriptionβ
rowsets is a built-in system table of doris, which is stored under the information_schema database. You can view the current rowsets information of each BE through the rowsets system table.
The rowsets table schema is:
MySQL [(none)]> desc information_schema.rowsets;
+------------------------+------------+------+-------+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+------------------------+------------+------+-------+---------+-------+
| BACKEND_ID | BIGINT | Yes | false | NULL | |
| ROWSET_ID | VARCHAR(*) | Yes | false | NULL | |
| TABLET_ID | BIGINT | Yes | false | NULL | |
| ROWSET_NUM_ROWS | BIGINT | Yes | false | NULL | |
| TXN_ID | BIGINT | Yes | false | NULL | |
| NUM_SEGMENTS | BIGINT | Yes | false | NULL | |
| START_VERSION | BIGINT | Yes | false | NULL | |
| END_VERSION | BIGINT | Yes | false | NULL | |
| INDEX_DISK_SIZE | BIGINT | Yes | false | NULL | |
| DATA_DISK_SIZE | BIGINT | Yes | false | NULL | |
| CREATION_TIME | BIGINT | Yes | false | NULL | |
| NEWEST_WRITE_TIMESTAMP | BIGINT | Yes | false | NULL | |
+------------------------+------------+------+-------+---------+-------+
Exampleβ
select * from information_schema.rowsets where BACKEND_ID = 10004 limit 10;
+------------+--------------------------------------------------+-----------+-----------------+--------+--------------+---------------+-------------+-----------------+----------------+---------------+------------------------+------------------------+
| BACKEND_ID | ROWSET_ID | TABLET_ID | ROWSET_NUM_ROWS | TXN_ID | NUM_SEGMENTS | START_VERSION | END_VERSION | INDEX_DISK_SIZE | DATA_DISK_SIZE | CREATION_TIME | OLDEST_WRITE_TIMESTAMP | NEWEST_WRITE_TIMESTAMP |
+------------+--------------------------------------------------+-----------+-----------------+--------+--------------+---------------+-------------+-----------------+----------------+---------------+------------------------+------------------------+
| 10004 | 02000000000000994847fbd41a42297d7c7a57d3bcb46f8c | 10771 | 66850 | 6 | 1 | 3 | 3 | 2894 | 688855 | 1659964582 | 1659964581 | 1659964581 |
| 10004 | 020000000000008d4847fbd41a42297d7c7a57d3bcb46f8c | 10771 | 66850 | 2 | 1 | 2 | 2 | 2894 | 688855 | 1659964575 | 1659964574 | 1659964574 |
| 10004 | 02000000000000894847fbd41a42297d7c7a57d3bcb46f8c | 10771 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1659964567 | 1659964567 | 1659964567 |
| 10004 | 020000000000009a4847fbd41a42297d7c7a57d3bcb46f8c | 10773 | 66639 | 6 | 1 | 3 | 3 | 2897 | 686828 | 1659964582 | 1659964581 | 1659964581 |
| 10004 | 020000000000008e4847fbd41a42297d7c7a57d3bcb46f8c | 10773 | 66639 | 2 | 1 | 2 | 2 | 2897 | 686828 | 1659964575 | 1659964574 | 1659964574 |
| 10004 | 02000000000000884847fbd41a42297d7c7a57d3bcb46f8c | 10773 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1659964567 | 1659964567 | 1659964567 |
| 10004 | 02000000000000984847fbd41a42297d7c7a57d3bcb46f8c | 10757 | 66413 | 6 | 1 | 3 | 3 | 2893 | 685381 | 1659964582 | 1659964581 | 1659964581 |
| 10004 | 020000000000008c4847fbd41a42297d7c7a57d3bcb46f8c | 10757 | 66413 | 2 | 1 | 2 | 2 | 2893 | 685381 | 1659964575 | 1659964574 | 1659964574 |
| 10004 | 02000000000000874847fbd41a42297d7c7a57d3bcb46f8c | 10757 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1659964567 | 1659964567 | 1659964567 |
| 10004 | 020000000000009c4847fbd41a42297d7c7a57d3bcb46f8c | 10739 | 1698 | 8 | 1 | 3 | 3 | 454 | 86126 | 1659964582 | 1659964582 | 1659964582 |
+------------+--------------------------------------------------+-----------+-----------------+--------+--------------+---------------+-------------+-----------------+----------------+---------------+------------------------+------------------------+
KeyWordsβ
rowsets, information_schema
