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47d8001c67
Added a SESSION-only system variable "wsrep_dirty_reads" to allow SELECT queries to pass even when the node is not prepared to accept queries (wsrep_ready=OFF). Added a test case.
36 lines
994 B
Plaintext
36 lines
994 B
Plaintext
#
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# wsrep_dirty_reads
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#
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# save the initial value
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SET @wsrep_dirty_reads_session_saved = @@session.wsrep_dirty_reads;
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# default
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SELECT @@global.wsrep_dirty_reads;
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ERROR HY000: Variable 'wsrep_dirty_reads' is a SESSION variable
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SELECT @@session.wsrep_dirty_reads;
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@@session.wsrep_dirty_reads
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0
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# scope and valid values
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SET @@session.wsrep_dirty_reads=OFF;
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SELECT @@session.wsrep_dirty_reads;
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@@session.wsrep_dirty_reads
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0
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SET @@session.wsrep_dirty_reads=ON;
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SELECT @@session.wsrep_dirty_reads;
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@@session.wsrep_dirty_reads
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1
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SET @@session.wsrep_dirty_reads=default;
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SELECT @@session.wsrep_dirty_reads;
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@@session.wsrep_dirty_reads
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0
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# invalid values
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SET @@session.wsrep_dirty_reads=NULL;
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ERROR 42000: Variable 'wsrep_dirty_reads' can't be set to the value of 'NULL'
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SET @@session.wsrep_dirty_reads='junk';
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ERROR 42000: Variable 'wsrep_dirty_reads' can't be set to the value of 'junk'
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# restore the initial values
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SET @@session.wsrep_dirty_reads = @wsrep_dirty_reads_session_saved;
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# End of test
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