diff options
Diffstat (limited to 'sql/wsrep_var.cc')
| -rw-r--r-- | sql/wsrep_var.cc | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/sql/wsrep_var.cc b/sql/wsrep_var.cc index b965c26c184..2272945535d 100644 --- a/sql/wsrep_var.cc +++ b/sql/wsrep_var.cc @@ -60,11 +60,29 @@ bool wsrep_on_update (sys_var *self, THD* thd, enum_var_type var_type) return false; } -void wsrep_causal_reads_update (sys_var *self, THD* thd, enum_var_type var_type) -{ - if (var_type == OPT_GLOBAL) { - thd->variables.wsrep_causal_reads = global_system_variables.wsrep_causal_reads; +bool wsrep_causal_reads_update (sys_var *self, THD* thd, enum_var_type var_type) +{ + // global setting should not affect session setting. + // if (var_type == OPT_GLOBAL) { + // thd->variables.wsrep_causal_reads = global_system_variables.wsrep_causal_reads; + // } + if (thd->variables.wsrep_causal_reads) { + thd->variables.wsrep_sync_wait |= WSREP_SYNC_WAIT_BEFORE_READ; + } else { + thd->variables.wsrep_sync_wait &= ~WSREP_SYNC_WAIT_BEFORE_READ; } + return false; +} + +bool wsrep_sync_wait_update (sys_var* self, THD* thd, enum_var_type var_type) +{ + // global setting should not affect session setting. + // if (var_type == OPT_GLOBAL) { + // thd->variables.wsrep_sync_wait = global_system_variables.wsrep_sync_wait; + // } + thd->variables.wsrep_causal_reads = thd->variables.wsrep_sync_wait & + WSREP_SYNC_WAIT_BEFORE_READ; + return false; } static int wsrep_start_position_verify (const char* start_str) |