50 lines
1.7 KiB
Plaintext
50 lines
1.7 KiB
Plaintext
Test binlog purging, especially 'automatic' purging
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Test expire-log-days handling as part of normal operation
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Logs are rotated as part of transaction COMMIT (to avoid
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a transaction being split across 2 files), rotation checks
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expire-logs-days to decide whether to purge, and purging
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calls into the Ndb handler to think about deleting rows
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from ndb_binlog_index.
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The delete from ndb_binlog_index is itself a SQL statement
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executing *during* the COMMIT of some other transaction,
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potentially in some other engine. Don't want to think
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about that too closely
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show variables like 'log_bin';
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Variable_name Value
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log_bin ON
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use test;
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create table test.tm (b varchar(1000)) engine=myisam;
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create table test.tn (b varchar(1000)) engine=ndb;
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create procedure go_forth_and_make_binlog(loops int)
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begin
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set @x = 0;
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repeat
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insert into test.tm values (repeat('C', 1000));
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insert into test.tm values (repeat('C', 1000));
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insert into test.tm values (repeat('C', 1000));
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insert into test.tm values (repeat('C', 1000));
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insert into test.tm values (repeat('C', 1000));
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insert into test.tm values (repeat('C', 1000));
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insert into test.tm values (repeat('C', 1000));
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insert into test.tn values (repeat('N', 1000));
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delete from test.tm;
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delete from test.tn;
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select sleep(0.1);
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set @x = @x + 1;
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until @x = loops
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end repeat;
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end%
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call go_forth_and_make_binlog(40);
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Now test binlog expiration at startup...
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Disable the 'immediate expiration' mechanism
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set global debug='';
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Create some binlogs...
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call go_forth_and_make_binlog(40);
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Now restart, should re-pickup the expire-log-days
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debug setting from the config file, and perform
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expire-logs action at restart...
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# restart
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drop procedure go_forth_and_make_binlog;
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drop table tm;
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drop table tn;
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