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fdb37d084b
- Problem is that failure of inplace DDL tries to access the
uninitialized column. This is caused by MDEV-19606 (commit 0274ab1de3).
Fix is that InnoDB should use column while freeing the index when index
is completely initialized.
63 lines
3.6 KiB
Text
63 lines
3.6 KiB
Text
--- instant_alter_limit.result 2020-05-26 18:01:27.377946439 +0530
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+++ instant_alter_limit,8k.reject 2020-05-26 20:19:50.881869095 +0530
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@@ -5,6 +5,28 @@
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ENGINE=InnoDB;
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INSERT INTO t VALUES(1,2,3,4,5);
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SET innodb_strict_mode = OFF;
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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SELECT * FROM t;
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b d a c e
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NULL NULL 1 NULL NULL
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@@ -12,11 +34,17 @@
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ADD COLUMN b INT, ALGORITHM=INSTANT;
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ERROR 0A000: ALGORITHM=INSTANT is not supported for this operation. Try ALGORITHM=INPLACE
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ALTER TABLE t CHANGE COLUMN b beta INT AFTER a, ALGORITHM=INSTANT;
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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ALTER TABLE t DROP e, DROP c, DROP d, ALGORITHM=INSTANT;
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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SELECT * FROM t;
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a beta
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1 NULL
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ALTER TABLE t DROP COLUMN beta, ALGORITHM=INSTANT;
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+Warnings:
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+Warning 139 Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
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ALTER TABLE t ADD COLUMN b INT NOT NULL, ALGORITHM=INSTANT;
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ERROR 0A000: ALGORITHM=INSTANT is not supported for this operation. Try ALGORITHM=INPLACE
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SELECT variable_value-@old_instant instants
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@@ -43,5 +71,12 @@
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FROM information_schema.global_status
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WHERE variable_name = 'innodb_instant_alter_column';
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instants
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-502
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+492
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DROP TABLE t;
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+#
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+# MDEV-21787 Alter table failure tries to access uninitialized column
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+#
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+CREATE TABLE t1(f1 INT PRIMARY KEY, f2 TEXT GENERATED ALWAYS AS (SUBSTR(f4, 1, 400)), f3 VARCHAR(500), f4 TEXT)ENGINE=InnoDB ROW_FORMAT=Compact;
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+ALTER TABLE t1 ADD UNIQUE KEY (f2(9));
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+ALTER TABLE t1 ADD COLUMN f5 TEXT, ALGORITHM=INPLACE;
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+DROP TABLE t1;
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