2008-12-05 22:11:46 +01:00
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set global maria_log_file_size=4294967295;
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drop database if exists mysqltest;
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create database mysqltest;
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use mysqltest;
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* shut down mysqld, removed logs, restarted it
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* TEST of Checkpoint between writing the commit log record and committing in trnman
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create table t1(a int primary key) engine=maria;
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insert into t1 values(1);
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flush table t1;
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* copied t1 for comparison
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set session debug="+d,maria_sleep_in_commit";
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insert into t1 values(2);
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set global maria_checkpoint_interval=1000;
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delete from t1 where a=2;
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SET SESSION debug="+d,maria_flush_whole_log,maria_crash";
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* crashing mysqld intentionally
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set global maria_checkpoint_interval=1;
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ERROR HY000: Lost connection to MySQL server during query
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* recovery happens
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check table t1 extended;
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Table Op Msg_type Msg_text
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mysqltest.t1 check status OK
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* testing that checksum after recovery is as expected
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Checksum-check
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ok
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use mysqltest;
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drop table t1;
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Fix for BUG#41493 "Maria: two recovery failures (wrong logging of BLOB pages)" and some more debugging
output related to this.
mysql-test/suite/maria/r/maria-recovery3.result:
result update
mysql-test/suite/maria/t/maria-recovery3.test:
Test for bug; before the fix, the "CHECK TABLE EXTENDED" would mention a bad bitmap, because the
REDO_INSERT_ROW_BLOBS was containing a page number which was actually the one of a tail, so execution of this
record would mark the tail page as full in bitmap (like if it were a blob page), though it wasn't full.
Also, the assertion added around ma_blockrec.c:6580 in the present revision fired.
storage/maria/ma_blockrec.c:
- fix for BUG#41493: if we found out that logging was not needed at this point (blob_length==0 i.e. tail page),
then we forgot to increment tmp_block, so in the second iteration (assuming two BLOB columns), we would log the
page range of the first iteration (i.e. the tail page's number) for this second BLOB, which would cause
Recovery to overwrite the tail page with the second BLOB.
- assert when marking the table corrupted during REDO phase; this catches some problems earlier
otherwise they get caught only when a later record wants to use the table.
- _ma_apply_redo_insert_row_blobs() now fills some synthetic info about the blobs and pages involved
in a REDO_INSERT_ROW_BLOBS record, for inclusion into maria_recovery.trace: number of blobs, of ranges,
first and last page (does not tell about any gaps in the middle, but good enough for now). It also asserts
that it's not overwriting a tail/head page (which happened in the bug).
storage/maria/ma_blockrec.h:
new prototype for _ma_apply_redo_insert_row_blobs
storage/maria/ma_recovery.c:
Print info got from _ma_apply_redo_insert_row_blobs() to maria_recovery.trace (so far this file had mentioned
what head and tail pages a record touched, but not blob pages).
2009-01-15 16:14:47 +01:00
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* TEST of logging of BLOBs
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CREATE TABLE `t1` (
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`blob` blob,
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`blob_key` blob
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) ENGINE=maria ROW_FORMAT=page
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;
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* copied t1 for feeding_recovery
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* compared t1 to old version
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set global maria_checkpoint_interval=0;
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INSERT INTO `t1` VALUES (NULL,repeat('A',5198));
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INSERT INTO `t1` VALUES (NULL,repeat('B',65535));
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INSERT INTO `t1` VALUES (repeat('K',5198),repeat('L',2325));
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INSERT INTO `t1` VALUES (repeat('C',65535),NULL);
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INSERT INTO `t1` VALUES (NULL,repeat('D',65535));
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INSERT INTO `t1` VALUES (repeat('E',65535),repeat('F',16111));
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INSERT INTO `t1` VALUES (repeat('G',65535),repeat('H',65535));
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INSERT INTO `t1` VALUES (repeat('I',5198),repeat('J',65535));
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check table t1 extended;
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Table Op Msg_type Msg_text
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mysqltest.t1 check status OK
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flush table t1;
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* copied t1 for comparison
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* compared t1 to old version
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SET SESSION debug="+d,maria_flush_whole_log,maria_crash";
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* crashing mysqld intentionally
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set global maria_checkpoint_interval=1;
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ERROR HY000: Lost connection to MySQL server during query
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* copied t1 back for feeding_recovery
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* recovery happens
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check table t1 extended;
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Table Op Msg_type Msg_text
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mysqltest.t1 check status OK
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* testing that checksum after recovery is as expected
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Checksum-check
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ok
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* compared t1 to old version
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use mysqltest;
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drop table t1;
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2008-12-05 22:11:46 +01:00
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drop database mysqltest_for_comparison;
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drop database mysqltest;
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