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528 lines
16 KiB
Text
528 lines
16 KiB
Text
# REPAIR USE_FRM is not implemented for partitioned tables.
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# Test what happens if we exchange a crashed partition with a table
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SHOW VARIABLES LIKE 'myisam_recover_options';
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Variable_name Value
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myisam_recover_options OFF
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CREATE TABLE t (a INT, KEY (a)) ENGINE=MyISAM;
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CREATE TABLE tp (a INT, KEY (a)) ENGINE=MyISAM
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PARTITION BY RANGE (a)
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(PARTITION pCrashed VALUES LESS THAN (15),
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PARTITION pMAX VALUES LESS THAN MAXVALUE);
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INSERT INTO t VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
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INSERT INTO tp VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
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FLUSH TABLES;
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# replacing tp#P#pCrashed.MYI with a corrupt + unclosed one created by doing:
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# 'create table t1 (a int key(a))' head -c1024 t1.MYI > corrupt_t1.MYI
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CHECK TABLE tp;
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Table Op Msg_type Msg_text
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test.tp check warning 1 client is using or hasn't closed the table properly
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test.tp check error Size of indexfile is: 1024 Should be: 2048
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test.tp check warning Size of datafile is: 77 Should be: 7
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test.tp check error Partition pCrashed returned error
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test.tp check error Corrupt
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ALTER TABLE tp EXCHANGE PARTITION pCrashed WITH TABLE t;
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ERROR HY000: Table './test/tp#P#pCrashed' is marked as crashed and should be repaired
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REPAIR TABLE tp;
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Table Op Msg_type Msg_text
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test.tp repair warning Number of rows changed from 1 to 11
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test.tp repair status OK
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CHECK TABLE tp;
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Table Op Msg_type Msg_text
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test.tp check status OK
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ALTER TABLE tp EXCHANGE PARTITION pCrashed WITH TABLE t;
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CHECK TABLE t;
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Table Op Msg_type Msg_text
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test.t check status OK
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CHECK TABLE tp;
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Table Op Msg_type Msg_text
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test.tp check status OK
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FLUSH TABLES;
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CHECK TABLE t;
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Table Op Msg_type Msg_text
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test.t check warning 1 client is using or hasn't closed the table properly
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test.t check error Size of indexfile is: 1024 Should be: 2048
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test.t check warning Size of datafile is: 77 Should be: 7
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test.t check error Corrupt
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ALTER TABLE tp EXCHANGE PARTITION pCrashed WITH TABLE t;
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ERROR HY000: Table './test/t' is marked as crashed and should be repaired
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REPAIR TABLE t;
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Table Op Msg_type Msg_text
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test.t repair warning Number of rows changed from 1 to 11
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test.t repair status OK
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CHECK TABLE t;
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Table Op Msg_type Msg_text
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test.t check status OK
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ALTER TABLE tp EXCHANGE PARTITION pCrashed WITH TABLE t;
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CHECK TABLE tp;
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Table Op Msg_type Msg_text
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test.tp check status OK
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CHECK TABLE t;
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Table Op Msg_type Msg_text
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test.t check status OK
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DROP TABLE t, tp;
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# test of non partitioned myisam for reference
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CREATE TABLE t1_will_crash (a INT, KEY (a)) ENGINE=MyISAM;
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INSERT INTO t1_will_crash VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
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FLUSH TABLES;
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# replacing t1.MYI with a corrupt + unclosed one created by doing:
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# 'create table t1 (a int key(a))' head -c1024 t1.MYI > corrupt_t1.MYI
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CHECK TABLE t1_will_crash;
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Table Op Msg_type Msg_text
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test.t1_will_crash check warning 1 client is using or hasn't closed the table properly
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test.t1_will_crash check error Size of indexfile is: 1024 Should be: 2048
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test.t1_will_crash check warning Size of datafile is: 77 Should be: 7
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test.t1_will_crash check error Corrupt
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REPAIR TABLE t1_will_crash;
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Table Op Msg_type Msg_text
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test.t1_will_crash repair warning Number of rows changed from 1 to 11
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test.t1_will_crash repair status OK
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SELECT * FROM t1_will_crash;
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a
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1
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2
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5
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7
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11
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DROP TABLE t1_will_crash;
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# test of check/repair of a damaged partition's MYI-file
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CREATE TABLE t1_will_crash (a INT, KEY (a))
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ENGINE=MyISAM
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PARTITION BY HASH (a)
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PARTITIONS 3;
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INSERT INTO t1_will_crash VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
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FLUSH TABLES;
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# test with CHECK/REPAIR TABLE
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# replacing t1#P#p1.MYI with a corrupt + unclosed one created by doing:
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# 'create table t1 (a int key(a)) partition by hash (a) partitions 3'
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# head -c1024 t1#P#p1.MYI > corrupt_t1#P#p1.MYI
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CHECK TABLE t1_will_crash;
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Table Op Msg_type Msg_text
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test.t1_will_crash check warning 1 client is using or hasn't closed the table properly
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test.t1_will_crash check error Size of indexfile is: 1024 Should be: 2048
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test.t1_will_crash check warning Size of datafile is: 28 Should be: 7
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test.t1_will_crash check error Partition p1 returned error
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test.t1_will_crash check error Corrupt
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REPAIR TABLE t1_will_crash;
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Table Op Msg_type Msg_text
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test.t1_will_crash repair warning Number of rows changed from 1 to 4
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test.t1_will_crash repair status OK
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SELECT * FROM t1_will_crash;
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a
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1
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11
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FLUSH TABLES;
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# test with ALTER TABLE ... CHECK/REPAIR PARTITION
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# replacing t1_will_crash#P#p1.MYI with a corrupt + unclosed one
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ALTER TABLE t1_will_crash CHECK PARTITION p0, p2;
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Table Op Msg_type Msg_text
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test.t1_will_crash check status OK
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ALTER TABLE t1_will_crash CHECK PARTITION p0, p1;
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Table Op Msg_type Msg_text
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test.t1_will_crash check warning 1 client is using or hasn't closed the table properly
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test.t1_will_crash check error Size of indexfile is: 1024 Should be: 2048
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test.t1_will_crash check warning Size of datafile is: 28 Should be: 7
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test.t1_will_crash check error Partition p1 returned error
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test.t1_will_crash check error Corrupt
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ALTER TABLE t1_will_crash CHECK PARTITION p1, p2;
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Table Op Msg_type Msg_text
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test.t1_will_crash check warning Table is marked as crashed
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test.t1_will_crash check warning 1 client is using or hasn't closed the table properly
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test.t1_will_crash check error Size of indexfile is: 1024 Should be: 2048
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test.t1_will_crash check warning Size of datafile is: 28 Should be: 7
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test.t1_will_crash check error Partition p1 returned error
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test.t1_will_crash check error Corrupt
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ALTER TABLE t1_will_crash REPAIR PARTITION p0, p2;
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Table Op Msg_type Msg_text
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test.t1_will_crash repair status OK
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ALTER TABLE t1_will_crash REPAIR PARTITION p0, p1;
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Table Op Msg_type Msg_text
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test.t1_will_crash repair warning Number of rows changed from 1 to 4
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test.t1_will_crash repair status OK
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SELECT * FROM t1_will_crash;
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a
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1
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7
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11
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DROP TABLE t1_will_crash;
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# test of check/repair of a damaged subpartition's MYI-file
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CREATE TABLE t1_will_crash (a INT, KEY (a))
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ENGINE=MyISAM
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PARTITION BY RANGE (a)
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SUBPARTITION BY HASH (a)
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SUBPARTITIONS 2
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(PARTITION p0 VALUES LESS THAN (7),
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PARTITION p1 VALUES LESS THAN MAXVALUE);
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INSERT INTO t1_will_crash VALUES (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11);
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SELECT * FROM t1_will_crash;
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a
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1
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11
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FLUSH TABLES;
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# test with CHECK/REPAIR TABLE
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# replacing t1_will_crash#P#p1#SP#p1sp0.MYI with a corrupt + unclosed one
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CHECK TABLE t1_will_crash;
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Table Op Msg_type Msg_text
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test.t1_will_crash check warning 1 client is using or hasn't closed the table properly
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test.t1_will_crash check error Size of indexfile is: 1024 Should be: 2048
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test.t1_will_crash check warning Size of datafile is: 14 Should be: 7
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test.t1_will_crash check error Subpartition p1sp0 returned error
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test.t1_will_crash check error Corrupt
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REPAIR TABLE t1_will_crash;
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Table Op Msg_type Msg_text
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test.t1_will_crash repair warning Number of rows changed from 1 to 2
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test.t1_will_crash repair status OK
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SELECT * FROM t1_will_crash;
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a
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1
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11
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FLUSH TABLES;
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# test with ALTER TABLE ... CHECK/REPAIR PARTITION
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# replacing t1_will_crash#P#p1#SP#p1sp0.MYI with a corrupt + unclosed one
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ALTER TABLE t1_will_crash CHECK PARTITION p0;
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Table Op Msg_type Msg_text
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test.t1_will_crash check status OK
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ALTER TABLE t1_will_crash CHECK PARTITION all;
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Table Op Msg_type Msg_text
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test.t1_will_crash check warning 1 client is using or hasn't closed the table properly
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test.t1_will_crash check error Size of indexfile is: 1024 Should be: 2048
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test.t1_will_crash check warning Size of datafile is: 14 Should be: 7
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test.t1_will_crash check error Subpartition p1sp0 returned error
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test.t1_will_crash check error Corrupt
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ALTER TABLE t1_will_crash CHECK PARTITION p1;
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Table Op Msg_type Msg_text
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test.t1_will_crash check warning Table is marked as crashed
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test.t1_will_crash check warning 1 client is using or hasn't closed the table properly
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test.t1_will_crash check error Size of indexfile is: 1024 Should be: 2048
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test.t1_will_crash check warning Size of datafile is: 14 Should be: 7
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test.t1_will_crash check error Subpartition p1sp0 returned error
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test.t1_will_crash check error Corrupt
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ALTER TABLE t1_will_crash REPAIR PARTITION p0;
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Table Op Msg_type Msg_text
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test.t1_will_crash repair status OK
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ALTER TABLE t1_will_crash REPAIR PARTITION p0, p1;
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Table Op Msg_type Msg_text
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test.t1_will_crash repair warning Number of rows changed from 1 to 2
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test.t1_will_crash repair status OK
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SELECT * FROM t1_will_crash;
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a
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1
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DROP TABLE t1_will_crash;
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# test of check/repair of crashed partitions in variuos states
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CREATE TABLE t1_will_crash (
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a VARCHAR(255),
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b INT,
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c LONGTEXT,
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PRIMARY KEY (a, b))
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ENGINE=MyISAM
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PARTITION BY HASH (b)
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PARTITIONS 7;
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SELECT COUNT(*) FROM t1_will_crash;
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COUNT(*)
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33
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SELECT (b % 7) AS `partition`, COUNT(*) AS rows FROM t1_will_crash GROUP BY (b % 7);
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partition rows
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0 2
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1 5
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2 5
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3 5
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4 4
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5 4
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6 8
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SELECT (b % 7) AS `partition`, b, a, length(c) FROM t1_will_crash ORDER BY `partition`, b, a;
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partition b a length(c)
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0 0 lost 64
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0 7 z lost 64
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1 1 abc 64
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1 8 tuw 64
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1 29 kkkkkkkkKkk 64
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1 71 1 broken when head -c1024 on datafile 1024
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1 71 eee 64
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2 2 def 64
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2 9 vxy 64
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2 23 lll 64
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2 30 2 crashed after _mi_mark_changed 64
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2 79 ccc 64
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3 3 ghi 64
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3 10 aaa 64
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3 17 nnn 64
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3 24 3 crashed after write_record 64
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3 73 ddd 64
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4 4 pqr 64
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4 11 bbb 64
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4 18 4 crashed after flush_cached_blocks 64
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4 67 fff 64
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5 5 mno 64
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5 19 mmm 64
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5 40 5 still here since crash in next row in multirow insert? 64
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5 89 a 64
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6 6 jkl 64
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6 13 ooo 64
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6 27 6 row 7 (crash before completely written to datafile) 128
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6 34 6 row 2 64
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6 48 6 row 4 64
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6 62 6 row 6 64
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6 83 64
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6 97 zzzzzZzzzzz 64
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FLUSH TABLES;
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# truncating p0 to simulate an empty datafile (not recovered!)
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# replacing p1 with only the first 1024 bytes (not recovered!)
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# replacing p3 with a crashed one at the last row in first insert
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# (crashed right after *share->write_record())
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# replacing p6 with a crashed MYD file (1) (splitted dynamic record)
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ANALYZE TABLE t1_will_crash;
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Table Op Msg_type Msg_text
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test.t1_will_crash analyze status OK
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OPTIMIZE TABLE t1_will_crash;
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Table Op Msg_type Msg_text
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test.t1_will_crash optimize info Found row block followed by deleted block
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test.t1_will_crash optimize warning Number of rows changed from 8 to 7
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test.t1_will_crash optimize status OK
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CHECK TABLE t1_will_crash;
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Table Op Msg_type Msg_text
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test.t1_will_crash check error Size of datafile is: 0 Should be: 164
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test.t1_will_crash check error Partition p0 returned error
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test.t1_will_crash check error Corrupt
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REPAIR TABLE t1_will_crash;
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Table Op Msg_type Msg_text
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test.t1_will_crash repair warning Number of rows changed from 2 to 0
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test.t1_will_crash repair info Found block that points outside data file at 344
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test.t1_will_crash repair warning Number of rows changed from 5 to 4
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test.t1_will_crash repair warning Number of rows changed from 0 to 5
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test.t1_will_crash repair status OK
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SELECT COUNT(*) FROM t1_will_crash;
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COUNT(*)
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29
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SELECT (b % 7) AS `partition`, COUNT(*) AS rows FROM t1_will_crash GROUP BY (b % 7);
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partition rows
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1 4
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2 5
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3 5
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4 4
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5 4
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6 7
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SELECT (b % 7) AS `partition`, b, a, length(c) FROM t1_will_crash ORDER BY `partition`, b, a;
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partition b a length(c)
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1 1 abc 64
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1 8 tuw 64
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1 29 kkkkkkkkKkk 64
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1 71 eee 64
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2 2 def 64
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2 9 vxy 64
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2 23 lll 64
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2 30 2 crashed after _mi_mark_changed 64
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2 79 ccc 64
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3 3 ghi 64
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3 10 aaa 64
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3 17 nnn 64
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3 24 3 crashed after write_record 64
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3 73 ddd 64
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4 4 pqr 64
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4 11 bbb 64
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4 18 4 crashed after flush_cached_blocks 64
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4 67 fff 64
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5 5 mno 64
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5 19 mmm 64
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5 40 5 still here since crash in next row in multirow insert? 64
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5 89 a 64
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6 6 jkl 64
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6 13 ooo 64
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6 34 6 row 2 64
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6 48 6 row 4 64
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6 62 6 row 6 64
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6 83 64
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6 97 zzzzzZzzzzz 64
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FLUSH TABLES;
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#
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# replacing p2 with crashed files (after _mi_mark_changed)
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ALTER TABLE t1_will_crash CHECK PARTITION p2;
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Table Op Msg_type Msg_text
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test.t1_will_crash check warning 1 client is using or hasn't closed the table properly
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test.t1_will_crash check status OK
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# crash was when index only marked as opened, no real corruption
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ALTER TABLE t1_will_crash CHECK PARTITION p2;
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Table Op Msg_type Msg_text
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test.t1_will_crash check status OK
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FLUSH TABLES;
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#
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# replacing p4 with updated but not closed index file
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ALTER TABLE t1_will_crash OPTIMIZE PARTITION p4;
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Table Op Msg_type Msg_text
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test.t1_will_crash optimize error Found key at page 2048 that points to record outside datafile
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test.t1_will_crash optimize error Partition p4 returned error
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test.t1_will_crash optimize status Operation failed
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ALTER TABLE t1_will_crash CHECK PARTITION p4;
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Table Op Msg_type Msg_text
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test.t1_will_crash check warning Table is marked as crashed and last repair failed
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test.t1_will_crash check warning 1 client is using or hasn't closed the table properly
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test.t1_will_crash check warning Size of datafile is: 368 Should be: 252
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test.t1_will_crash check error Found 4 keys of 3
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test.t1_will_crash check error Partition p4 returned error
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test.t1_will_crash check error Corrupt
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ALTER TABLE t1_will_crash REPAIR PARTITION p4;
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Table Op Msg_type Msg_text
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test.t1_will_crash repair warning Number of rows changed from 3 to 4
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test.t1_will_crash repair status OK
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FLUSH TABLES;
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#
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# replacing p6 with a crashed MYD file (2) (splitted dynamic record)
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ALTER TABLE t1_will_crash CHECK PARTITION p6;
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Table Op Msg_type Msg_text
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test.t1_will_crash check warning Size of datafile is: 868 Should be: 604
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test.t1_will_crash check error Unexpected byte: 0 at link: 340
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test.t1_will_crash check error Partition p6 returned error
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test.t1_will_crash check error Corrupt
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ALTER TABLE t1_will_crash REPAIR PARTITION p6;
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Table Op Msg_type Msg_text
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test.t1_will_crash repair info Delete link points outside datafile at 340
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test.t1_will_crash repair info Delete link points outside datafile at 340
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test.t1_will_crash repair status OK
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SELECT (b % 7) AS `partition`, b, a, length(c) FROM t1_will_crash
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WHERE (b % 7) = 6
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ORDER BY `partition`, b, a;
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partition b a length(c)
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6 6 jkl 64
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6 13 ooo 64
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6 34 6 row 2 64
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6 48 6 row 4 64
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6 62 6 row 6 64
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6 83 64
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6 97 zzzzzZzzzzz 64
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FLUSH TABLES;
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#
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# replacing p6 with a crashed MYD file (3) (splitted dynamic record)
|
|
# Different results from the corrupt table, which can lead to dropping
|
|
# of the not completely written rows when using REBUILD on a corrupt
|
|
# table, depending if one reads via index or direct on datafile.
|
|
# Since crash when reuse of deleted row space, CHECK MEDIUM or EXTENDED
|
|
# is required (MEDIUM is default) to verify correct behavior!
|
|
SELECT (b % 7) AS `partition`, b, a, length(c) FROM t1_will_crash
|
|
WHERE (b % 7) = 6
|
|
ORDER BY `partition`, b, a;
|
|
partition b a length(c)
|
|
6 6 jkl 64
|
|
6 13 ooo 64
|
|
6 34 6 row 2 64
|
|
6 83 64
|
|
6 97 zzzzzZzzzzz 64
|
|
SET @save_optimizer_switch= @@optimizer_switch;
|
|
SET @@optimizer_switch='derived_merge=off';
|
|
SELECT (b % 7) AS `partition`, b, a FROM (SELECT b,a FROM t1_will_crash) q
|
|
WHERE (b % 7) = 6
|
|
ORDER BY `partition`, b, a;
|
|
partition b a
|
|
6 6 jkl
|
|
6 13 ooo
|
|
6 34 6 row 2
|
|
6 48 6 row 4
|
|
6 62 6 row 6
|
|
6 83
|
|
6 97 zzzzzZzzzzz
|
|
SET @@optimizer_switch=@save_optimizer_switch;
|
|
ALTER TABLE t1_will_crash CHECK PARTITION p6;
|
|
Table Op Msg_type Msg_text
|
|
test.t1_will_crash check warning Size of datafile is: 868 Should be: 604
|
|
test.t1_will_crash check error Record-count is not ok; is 8 Should be: 7
|
|
test.t1_will_crash check warning Found 10 key parts. Should be: 7
|
|
test.t1_will_crash check error Partition p6 returned error
|
|
test.t1_will_crash check error Corrupt
|
|
ALTER TABLE t1_will_crash REPAIR PARTITION p6;
|
|
Table Op Msg_type Msg_text
|
|
test.t1_will_crash repair warning Number of rows changed from 7 to 8
|
|
test.t1_will_crash repair status OK
|
|
SELECT COUNT(*) FROM t1_will_crash;
|
|
COUNT(*)
|
|
29
|
|
SELECT (b % 7) AS `partition`, COUNT(*) AS rows FROM t1_will_crash GROUP BY (b % 7);
|
|
partition rows
|
|
1 4
|
|
2 4
|
|
3 5
|
|
4 4
|
|
5 4
|
|
6 8
|
|
SELECT (b % 7) AS `partition`, b, a, length(c) FROM t1_will_crash ORDER BY `partition`, b, a;
|
|
partition b a length(c)
|
|
1 1 abc 64
|
|
1 8 tuw 64
|
|
1 29 kkkkkkkkKkk 64
|
|
1 71 eee 64
|
|
2 2 def 64
|
|
2 9 vxy 64
|
|
2 23 lll 64
|
|
2 79 ccc 64
|
|
3 3 ghi 64
|
|
3 10 aaa 64
|
|
3 17 nnn 64
|
|
3 24 3 crashed after write_record 64
|
|
3 73 ddd 64
|
|
4 4 pqr 64
|
|
4 11 bbb 64
|
|
4 18 4 crashed after flush_cached_blocks 64
|
|
4 67 fff 64
|
|
5 5 mno 64
|
|
5 19 mmm 64
|
|
5 40 5 still here since crash in next row in multirow insert? 64
|
|
5 89 a 64
|
|
6 6 jkl 64
|
|
6 13 ooo 64
|
|
6 27 6 row 7 (crash before completely written to datafile) 128
|
|
6 34 6 row 2 64
|
|
6 48 6 row 4 64
|
|
6 62 6 row 6 64
|
|
6 83 64
|
|
6 97 zzzzzZzzzzz 64
|
|
ALTER TABLE t1_will_crash CHECK PARTITION all EXTENDED;
|
|
Table Op Msg_type Msg_text
|
|
test.t1_will_crash check status OK
|
|
DROP TABLE t1_will_crash;
|