Details
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Task
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
Description
The "Name" field in information_schema's INNODB_TABLESPACES_ENCRYPTION table supposedly refers to a path name. However, there seems to be at least one "special" value used in this field--"innodb_system":
MariaDB [(none)]> SELECT * FROM INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION WHERE NAME='innodb_system'\G
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*************************** 1. row ***************************
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SPACE: 0
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NAME: innodb_system
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ENCRYPTION_SCHEME: 1
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KEYSERVER_REQUESTS: 1
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MIN_KEY_VERSION: 1
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CURRENT_KEY_VERSION: 1
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KEY_ROTATION_PAGE_NUMBER: NULL
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KEY_ROTATION_MAX_PAGE_NUMBER: NULL
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CURRENT_KEY_ID: 1
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ROTATING_OR_FLUSHING: 0
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1 row in set (0.00 sec)
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I assume that this special value refers to the system tablespace, as defined by innodb_data_file_path (usually ibdata1). However, if it is, it does not appear to be documented:
https://mariadb.com/kb/en/library/information-schema-innodb_tablespaces_encryption-table/
If any other special values are also used in this table, then those should probably also be documented.
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