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MDEV-23705 Assertion 'table->data_dir_path || !space'

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After DISCARD TABLESPACE, the tablespace of a table will no longer
exist, and dict_get_and_save_data_dir_path() would invoke
dict_get_first_path() to read an entry from SYS_DATAFILES.
For some reason, DISCARD TABLESPACE would not to remove the entry
from there.

dict_get_and_save_data_dir_path(): If the tablespace has been
discarded, do not bother trying to read the name.

Side note: The tables SYS_TABLESPACES and SYS_DATAFILES are
redundant and subject to removal in MDEV-22343.
This commit is contained in:
Marko Mäkelä
2020-09-22 11:13:51 +03:00
parent eb38b1f703
commit 732cd7fd53
3 changed files with 23 additions and 1 deletions
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11
mysql-test/suite/innodb/r/truncate.result
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@ -39,3 +39,14 @@ TRUNCATE t1;
SELECT * FROM t1;
a
DROP TEMPORARY TABLE t1;
#
# MDEV-23705 Assertion 'table->data_dir_path || !space'
#
CREATE TABLE t(c INT) ENGINE=InnoDB;
ALTER TABLE t DISCARD TABLESPACE;
RENAME TABLE t TO u;
TRUNCATE u;
Warnings:
Warning 1814 Tablespace has been discarded for table `u`
TRUNCATE u;
DROP TABLE u;