Sign InTry Free

ANALYZE_STATUS

The ANALYZE_STATUS table provides information about the running tasks that collect statistics and a limited number of history tasks.

Starting from TiDB v6.1.0, the ANALYZE_STATUS table supports showing cluster-level tasks. Even after a TiDB restart, you can still view task records before the restart using this table. Before TiDB v6.1.0, the ANALYZE_STATUS table can only show instance-level tasks, and task records are cleared after a TiDB restart.

Starting from TiDB v6.1.0, you can view the history tasks within the last 7 days through the system table mysql.analyze_jobs.

USE information_schema; DESC analyze_status;
+----------------------+---------------------+------+------+---------+-------+ | Field | Type | Null | Key | Default | Extra | +----------------------+---------------------+------+------+---------+-------+ | TABLE_SCHEMA | varchar(64) | YES | | NULL | | | TABLE_NAME | varchar(64) | YES | | NULL | | | PARTITION_NAME | varchar(64) | YES | | NULL | | | JOB_INFO | longtext | YES | | NULL | | | PROCESSED_ROWS | bigint(64) unsigned | YES | | NULL | | | START_TIME | datetime | YES | | NULL | | | END_TIME | datetime | YES | | NULL | | | STATE | varchar(64) | YES | | NULL | | | FAIL_REASON | longtext | YES | | NULL | | | INSTANCE | varchar(512) | YES | | NULL | | | PROCESS_ID | bigint(64) unsigned | YES | | NULL | | | REMAINING_SECONDS | bigint(64) unsigned | YES | | NULL | | | PROGRESS | varchar(20) | YES | | NULL | | | ESTIMATED_TOTAL_ROWS | bigint(64) unsigned | YES | | NULL | | +----------------------+---------------------+------+------+---------+-------+ 14 rows in set (0.00 sec)
SELECT * FROM information_schema.analyze_status;
+--------------+------------+----------------+--------------------------------------------------------------------+----------------+---------------------+---------------------+----------+-------------+----------------+------------+----------------------+----------+-----------------------+ | TABLE_SCHEMA | TABLE_NAME | PARTITION_NAME | JOB_INFO | PROCESSED_ROWS | START_TIME | END_TIME | STATE | FAIL_REASON | INSTANCE | PROCESS_ID | REMAINING_SECONDS | PROGRESS | ESTIMATED_TOTAL_ROWS | +--------------+------------+----------------+--------------------------------------------------------------------+----------------+---------------------+---------------------+----------+-------------+----------------+------------+----------------------+----------+-----------------------+ | test | t | p1 | analyze table all columns with 256 buckets, 500 topn, 1 samplerate | 0 | 2022-05-27 11:30:12 | 2022-05-27 11:30:12 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL | | test | t | p0 | analyze table all columns with 256 buckets, 500 topn, 1 samplerate | 0 | 2022-05-27 11:30:12 | 2022-05-27 11:30:12 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL | | test | t | p1 | analyze index idx | 0 | 2022-05-27 11:29:46 | 2022-05-27 11:29:46 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL | | test | t | p0 | analyze index idx | 0 | 2022-05-27 11:29:46 | 2022-05-27 11:29:46 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL | | test | t | p1 | analyze columns | 0 | 2022-05-27 11:29:46 | 2022-05-27 11:29:46 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL | | test | t | p0 | analyze columns | 0 | 2022-05-27 11:29:46 | 2022-05-27 11:29:46 | finished | NULL | 127.0.0.1:4000 | NULL | NULL | NULL | NULL | | test | t | p1 | analyze table all columns with 256 buckets, 500 topn, 1 samplerate | 1000000 | 2022-05-27 11:30:12 | 2022-05-27 11:40:12 | running | NULL | 127.0.0.1:4000 | 690208308 | 600s | 0.25 | 4000000 | +--------------+------------+----------------+--------------------------------------------------------------------+----------------+---------------------+---------------------+----------+-------------+----------------+------------+----------------------+----------+-----------------------+ 6 rows in set (0.00 sec)

Fields in the ANALYZE_STATUS table are described as follows:

  • TABLE_SCHEMA: The name of the database to which the table belongs.
  • TABLE_NAME: The name of the table.
  • PARTITION_NAME: The name of the partitioned table.
  • JOB_INFO: The information of the ANALYZE task. If an index is analyzed, this information will include the index name. When tidb_analyze_version = 2, this information will include configuration items such as sample rate.
  • PROCESSED_ROWS: The number of rows that have been processed.
  • START_TIME: The start time of the ANALYZE task.
  • END_TIME: The end time of the ANALYZE task.
  • STATE: The execution status of the ANALYZE task. Its value can be pending, running,finished or failed.
  • FAIL_REASON: The reason why the task fails. If the execution is successful, the value is NULL.
  • INSTANCE: The TiDB instance that executes the task.
  • PROCESS_ID: The process ID that executes the task.
  • REMAINING_SECONDS: The estimated time (in seconds) remaining for the task to complete.
  • PROGRESS: The progress of the task.
  • ESTIMATED_TOTAL_ROWS: The total rows that need to be analyzed by the task.

See also

Was this page helpful?

Download PDFRequest docs changesAsk questions on DiscordEdit this page
Playground
New
One-stop & interactive experience of TiDB's capabilities WITHOUT registration.
Products
TiDB
TiDB Dedicated
TiDB Serverless
Pricing
Get Demo
Get Started
© 2024 PingCAP. All Rights Reserved.
Privacy Policy.