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MDEV-26131 SEGV in ha_innobase::discard_or_import_tablespace

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Import operation without .cfg file fails when there is mismatch of index
between metadata table and .ibd file. Moreover, MDEV-19022 shows
that InnoDB can end up with index tree where non-leaf page has only
one child page. So it is unsafe to find the secondary index root page.

This patch does the following when importing the table without .cfg file:

1) If the metadata contains more than one index then InnoDB stops
the import operation and report the user to drop all secondary
indexes before doing import operation.

2) When the metadata contain only clustered index then InnoDB finds the
index id by reading page 0 & page 3 instead of traversing the
whole tablespace.
This commit is contained in:
Thirunarayanan Balathandayuthapani
2021-07-28 19:25:25 +05:30
parent 4cd063b9e4
commit 89445b64fe
6 changed files with 249 additions and 115 deletions
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39
mysql-test/suite/innodb_gis/r/alter_spatial_index.result
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@ -252,6 +252,16 @@ UNLOCK TABLES;
ALTER TABLE tab DISCARD TABLESPACE;
SELECT c1,ST_Astext(c2),ST_Astext(c4) FROM tab;
ERROR HY000: Tablespace has been discarded for table `tab`
ERROR HY000: Internal error: Drop all secondary indexes before importing table test/tab when .cfg file is missing.
Table Create Table
tab CREATE TABLE `tab` (
`c1` int(11) NOT NULL,
`c2` point NOT NULL,
`c3` linestring NOT NULL,
`c4` polygon NOT NULL,
`c5` geometry NOT NULL,
PRIMARY KEY (`c2`(25))
) ENGINE=InnoDB DEFAULT CHARSET=latin1
CHECK TABLE tab;
Table Op Msg_type Msg_text
test.tab check status OK
@ -282,9 +292,6 @@ INSERT INTO tab SELECT * FROM tab1;
ALTER TABLE tab DROP PRIMARY KEY;
affected rows: 1
info: Records: 1 Duplicates: 0 Warnings: 0
ALTER TABLE tab DROP INDEX idx2;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
SET STATEMENT sql_mode = 'NO_ENGINE_SUBSTITUTION' FOR
CREATE TEMPORARY TABLE temp_tab AS SELECT * FROM tab where c1 = c2;
INSERT INTO temp_tab SELECT * FROM tab;
@ -322,18 +329,10 @@ tab CREATE TABLE `tab` (
`c2` point NOT NULL,
`c3` linestring NOT NULL,
`c4` polygon NOT NULL,
`c5` geometry NOT NULL,
SPATIAL KEY `idx3` (`c3`),
SPATIAL KEY `idx4` (`c4`) COMMENT 'testing spatial index on Polygon',
SPATIAL KEY `idx5` (`c5`) COMMENT 'testing spatial index on Geometry',
KEY `idx6` (`c4`(10)) USING BTREE
`c5` geometry NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SHOW INDEX FROM tab;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
tab 1 idx3 1 c3 A # 32 NULL SPATIAL
tab 1 idx4 1 c4 A # 32 NULL SPATIAL testing spatial index on Polygon
tab 1 idx5 1 c5 A # 32 NULL SPATIAL testing spatial index on Geometry
tab 1 idx6 1 c4 A # 10 NULL BTREE
DELETE FROM tab;
ALTER TABLE tab ADD PRIMARY KEY(c2);
affected rows: 0
@ -354,20 +353,12 @@ tab CREATE TABLE `tab` (
`c5` geometry NOT NULL,
PRIMARY KEY (`c2`(25)),
UNIQUE KEY `const_1` (`c2`(25)),
SPATIAL KEY `idx3` (`c3`),
SPATIAL KEY `idx4` (`c4`) COMMENT 'testing spatial index on Polygon',
SPATIAL KEY `idx5` (`c5`) COMMENT 'testing spatial index on Geometry',
KEY `idx6` (`c4`(10)) USING BTREE,
SPATIAL KEY `idx2` (`c2`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SHOW INDEX FROM tab;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
tab 0 PRIMARY 1 c2 A # 25 NULL BTREE
tab 0 const_1 1 c2 A # 25 NULL BTREE
tab 1 idx3 1 c3 A # 32 NULL SPATIAL
tab 1 idx4 1 c4 A # 32 NULL SPATIAL testing spatial index on Polygon
tab 1 idx5 1 c5 A # 32 NULL SPATIAL testing spatial index on Geometry
tab 1 idx6 1 c4 A # 10 NULL BTREE
tab 1 idx2 1 c2 A # 32 NULL SPATIAL
INSERT INTO tab(c1,c2,c3,c4,c5)
VALUES(1,ST_GeomFromText('POINT(10 10)'),ST_GeomFromText('LINESTRING(5 5,20 20,30 30)'),
@ -396,20 +387,12 @@ tab CREATE TABLE `tab` (
`c5` geometry NOT NULL,
PRIMARY KEY (`c5`(10)),
UNIQUE KEY `const_1` (`c5`(10)),
SPATIAL KEY `idx3` (`c3`),
SPATIAL KEY `idx4` (`c4`) COMMENT 'testing spatial index on Polygon',
SPATIAL KEY `idx5` (`c5`) COMMENT 'testing spatial index on Geometry',
KEY `idx6` (`c4`(10)) USING BTREE,
SPATIAL KEY `idx2` (`c2`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
SHOW INDEX FROM tab;
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment
tab 0 PRIMARY 1 c5 A # 10 NULL BTREE
tab 0 const_1 1 c5 A # 10 NULL BTREE
tab 1 idx3 1 c3 A # 32 NULL SPATIAL
tab 1 idx4 1 c4 A # 32 NULL SPATIAL testing spatial index on Polygon
tab 1 idx5 1 c5 A # 32 NULL SPATIAL testing spatial index on Geometry
tab 1 idx6 1 c4 A # 10 NULL BTREE
tab 1 idx2 1 c2 A # 32 NULL SPATIAL
INSERT INTO tab(c1,c2,c3,c4,c5)
VALUES(1,ST_GeomFromText('POINT(10 10)'),ST_GeomFromText('LINESTRING(5 5,20 20,30 30)'),