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Bug #26334149 - MYSQL CRASHES WHEN FULL TEXT INDEXES IBD FILES ARE ORPHANED DUE TO RENAME TABLE

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Problem:
When FTS index is added into a table which doesn't have 'FTS_DOC_ID'
column, Innodb rebuilds table to add column 'FTS_DOC_ID'. when this FTS
index is dropped from this table. Innodb doesn't not rebuild table to
remove 'FTS_DOC_ID' column and deletes FTS index auxiliary tables.
But it doesn't delete FTS common auxiliary tables.
Later when the database having this table is renamed, FTS auxiliary
tables are not renamed because table's flags2 (dict_table_t.flags2)
has been resetted for DICT_TF2_FTS flag during FTS index drop operation.
Now when we drop old database, it leads to an assert.

Fix:
During renaming of FTS auxiliary tables, ORed a condition to check if
table has DICT_TF2_FTS_HAS_DOC_ID flag set.

RB: 18769
Reviewed by : Jimmy.Yang@oracle.com
This commit is contained in:
Sachin Agarwal
2018-02-22 18:45:38 +05:30
committed by Marko Mäkelä
parent 9c03ba8f0d
commit 197bf0fe35
3 changed files with 53 additions and 2 deletions
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21
mysql-test/suite/innodb/t/innodb-alter.test
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@ -481,3 +481,24 @@ eval ALTER TABLE $source_db.t1 DROP INDEX index2, algorithm=inplace;
eval DROP TABLE $source_db.t1;
eval DROP DATABASE $source_db;
eval DROP DATABASE $dest_db;
--echo #
--echo # BUG #26334149 MYSQL CRASHES WHEN FULL TEXT INDEXES IBD FILES ARE
--echo # ORPHANED DUE TO RENAME TABLE
--echo #
CREATE DATABASE db1; USE db1;
CREATE TABLE notes (
id int(11) NOT NULL AUTO_INCREMENT,
body text COLLATE utf8_unicode_ci,
PRIMARY KEY (id)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8
COLLATE=utf8_unicode_ci
ROW_FORMAT=COMPRESSED;
ALTER TABLE notes ADD FULLTEXT INDEX index_ft_body (body(255));
DROP INDEX index_ft_body ON notes;
CREATE DATABASE db2;
RENAME TABLE db1.notes TO db2.notes;
DROP DATABASE db1;
DROP DATABASE db2;