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# # wsrep_causal_reads # # save the initial values SET @wsrep_causal_reads_global_saved = @@global.wsrep_causal_reads; SET @wsrep_causal_reads_session_saved = @@session.wsrep_causal_reads; # default SELECT @@global.wsrep_causal_reads; @@global.wsrep_causal_reads 0 SELECT @@session.wsrep_causal_reads; @@session.wsrep_causal_reads 0 # scope and valid values SET @@global.wsrep_causal_reads=OFF; Warnings: Warning 1287 '@@wsrep_causal_reads' is deprecated and will be removed in a future release. Please use '@@wsrep_sync_wait=1' instead SELECT @@global.wsrep_causal_reads; @@global.wsrep_causal_reads 0 SET @@global.wsrep_causal_reads=ON; Warnings: Warning 1287 '@@wsrep_causal_reads' is deprecated and will be removed in a future release. Please use '@@wsrep_sync_wait=1' instead SELECT @@global.wsrep_causal_reads; @@global.wsrep_causal_reads 1 SET @@session.wsrep_causal_reads=OFF; Warnings: Warning 1287 '@@wsrep_causal_reads' is deprecated and will be removed in a future release. Please use '@@wsrep_sync_wait=1' instead SELECT @@session.wsrep_causal_reads; @@session.wsrep_causal_reads 0 SET @@session.wsrep_causal_reads=ON; Warnings: Warning 1287 '@@wsrep_causal_reads' is deprecated and will be removed in a future release. Please use '@@wsrep_sync_wait=1' instead SELECT @@session.wsrep_causal_reads; @@session.wsrep_causal_reads 1 SET @@session.wsrep_causal_reads=default; Warnings: Warning 1287 '@@wsrep_causal_reads' is deprecated and will be removed in a future release. Please use '@@wsrep_sync_wait=1' instead SELECT @@session.wsrep_causal_reads; @@session.wsrep_causal_reads 1 # invalid values SET @@global.wsrep_causal_reads=NULL; ERROR 42000: Variable 'wsrep_causal_reads' can't be set to the value of 'NULL' SET @@global.wsrep_causal_reads='junk'; ERROR 42000: Variable 'wsrep_causal_reads' can't be set to the value of 'junk' SET @@session.wsrep_causal_reads=NULL; ERROR 42000: Variable 'wsrep_causal_reads' can't be set to the value of 'NULL' SET @@session.wsrep_causal_reads='junk'; ERROR 42000: Variable 'wsrep_causal_reads' can't be set to the value of 'junk' # restore the initial values SET @@global.wsrep_causal_reads = @wsrep_causal_reads_global_saved; Warnings: Warning 1287 '@@wsrep_causal_reads' is deprecated and will be removed in a future release. Please use '@@wsrep_sync_wait=1' instead SET @@session.wsrep_causal_reads = @wsrep_causal_reads_session_saved; Warnings: Warning 1287 '@@wsrep_causal_reads' is deprecated and will be removed in a future release. Please use '@@wsrep_sync_wait=1' instead # End of test