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Added syntax and implementation for BACKUP STAGE's

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Part of MDEV-5336 Implement LOCK FOR BACKUP

- Changed check of Global_only_lock to also include BACKUP lock.
- We store latest MDL_BACKUP_DDL lock in thd->mdl_backup_ticket to be able
  to downgrade lock during copy_data_between_tables()
This commit is contained in:
Monty
2018-11-13 01:34:37 +02:00
parent 965311ee8b
commit c53aab974b
38 changed files with 3530 additions and 41 deletions
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sql/sql_cmd.h
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@ -108,6 +108,7 @@ enum enum_sql_command {
SQLCOM_SHOW_STATUS_PACKAGE,
SQLCOM_SHOW_STATUS_PACKAGE_BODY,
SQLCOM_SHOW_PACKAGE_BODY_CODE,
SQLCOM_BACKUP,
/*
When a command is added here, be sure it's also added in mysqld.cc