inspect_memory_detail

inspect_memory_detail(module_name, class_info)

This function returns the estimated memory usage for a specific class or field within a module.

Arguments

module_name: The name of the module (VARCHAR). class_info: The name of the class or 'class_name.field_name' (VARCHAR).

NOTE:

1. The following module names are supported (for more details, see the MemoryUsageTracker.java class):

• Load
• Compaction
• Export
• Delete
• Transaction
• Backup
• Task
• TabletInvertedIndex
• LocalMetastore
• Report
• MV
• Query
• Profile
• Agent
• Statistics
• Coordinator
• Dict

2. class_info can be a class or a class's field of the specific class(for more details, see the MemoryUsageTracker.java class).

Return Value

Returns a VARCHAR string representing the estimated memory size (e.g., "100MB").

Examples

Example 1: Inspect Task module TaskManager's memory usage:

mysql> select inspect_memory_detail('Task', 'TaskManager');
+----------------------------------------------+
| inspect_memory_detail('Task', 'TaskManager') |
+----------------------------------------------+
| 0B                                           |
+----------------------------------------------+
1 row in set (0.00 sec)

Example 2: Inspect Task module TaskManager's taskRunManager field's memory usage:

mysql> select inspect_memory_detail('Task', 'TaskManager.taskRunManager');
+-------------------------------------------------------------+
| inspect_memory_detail('Task', 'TaskManager.taskRunManager') |
+-------------------------------------------------------------+
| 592B                                                        |
+-------------------------------------------------------------+
1 row in set (0.01 sec)