21.5.14.42 ndbinfo 线程 table

threadstable 提供有关在NDB内核中运行的线程的信息。

threadstable 包含以下列：

• node_id

运行线程的节点的 ID

• thr_no

线程 ID(特定于此节点)

• thread_name

线程名称(线程类型)

• thread_description

线程(类型)描述

Notes

此处显示了一个 2 节点示例集群的示例输出，包括线程描述：

mysql> SELECT * FROM threads;
+---------+--------+-------------+------------------------------------------------------------------+
| node_id | thr_no | thread_name | thread_description                                               |
+---------+--------+-------------+------------------------------------------------------------------+
|       5 |      0 | main        | main thread, schema and distribution handling                    |
|       5 |      1 | rep         | rep thread, asynch replication and proxy block handling          |
|       5 |      2 | ldm         | ldm thread, handling a set of data partitions                    |
|       5 |      3 | recv        | receive thread, performing receive and polling for new receives |
|       6 |      0 | main        | main thread, schema and distribution handling                    |
|       6 |      1 | rep         | rep thread, asynch replication and proxy block handling          |
|       6 |      2 | ldm         | ldm thread, handling a set of data partitions                    |
|       6 |      3 | recv        | receive thread, performing receive and polling for new receives |
+---------+--------+-------------+------------------------------------------------------------------+
8 rows in set (0.01 sec)

该 table 是在 NDB 7.5.2 中添加的。