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MDEV-18152 Assertion 'num_fts_index <= 1' failed

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InnoDB does not allow creating multiple FULLTEXT INDEX
in ALGORITHM=INPLACE. This constraint was not being properly
enforced after MariaDB started to support ALGORITHM=INSTANT
and instant ADD COLUMN.

As a side effect of this bug, we again allow ALGORITHM=INPLACE
to rebuild a table when one FULLTEXT INDEX survives.
Also, we are returning a more accurate reason for refusing LOCK=NONE.

innobase_fulltext_exist(): Return the number of fulltext indexes.

ha_innobase::check_if_supported_inplace_alter(): If the table
needs to be rebuilt, refuse the operation if multiple fulltext
indexes would remain.
This commit is contained in:
Marko Mäkelä 2019-01-18 12:39:19 +02:00
commit 4e75bfcb21
7 changed files with 69 additions and 58 deletions
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2
mysql-test/main/innodb_mysql_sync.test
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@ -650,7 +650,7 @@ SET DEBUG_SYNC= 'alter_table_copy_after_lock_upgrade SIGNAL upgraded';
--echo #Setup a table with FULLTEXT index.
--connection default
CREATE TABLE t1(fld1 CHAR(10), FULLTEXT(fld1)) ENGINE= INNODB;
CREATE TABLE t1(fld1 CHAR(10), FULLTEXT(fld1), FULLTEXT(fld1)) ENGINE= INNODB;
INSERT INTO t1 VALUES("String1");
--echo #OPTIMIZE TABLE operation.