SBR support for binlog trx meta data

Summary:
Supporting binlog trx meta data for SBR. The meta data event is
written right before every query event in a trx representing a statement.

Squash with: D5220355

Reviewed By: tianx

Differential Revision: D5530983

fbshipit-source-id: b6a490f

Author: abhinav04sharma

mysql-test/suite/rpl/r/binlog_trx_meta_data.result

@@ -7,10 +7,11 @@ set @save.binlog_trx_meta_data= @@global.binlog_trx_meta_data;
 set @@global.binlog_trx_meta_data= true;
 set @save.binlog_trx_meta_data= @@global.binlog_trx_meta_data;
 set @@global.binlog_trx_meta_data= true;
-include/sync_slave_sql_with_master.inc
-include/sync_slave_sql_with_master.inc
 meta	count(*)
-# /*::TRX_META_DATA::{"timestamps":[ts]}*/	134
+# /*::TRX_META_DATA::{"timestamps":[ts]}*/	301
 meta	count(*)
-# /*::TRX_META_DATA::{"timestamps":[ts,ts]}*/	134
+# /*::TRX_META_DATA::{"timestamps":[ts,ts]}*/	301
+drop table t1;
+set @@global.binlog_trx_meta_data= @save.binlog_trx_meta_data;
+set @@global.binlog_trx_meta_data= @save.binlog_trx_meta_data;
 include/rpl_end.inc

mysql-test/suite/rpl/t/binlog_trx_meta_data.test

@@ -1,5 +1,4 @@
 source include/master-slave.inc;
-source include/have_binlog_format_row.inc;
 
 # Enable trx meta data
 connection master;
@@ -12,15 +11,28 @@ set @@global.binlog_trx_meta_data= true;
 
 # Generate load
 connection master;
-let $skip_cleanup= 1;
-let $sync_with_master= 1;
-let $databases=2;
-let $iter=5;
-source extra/rpl_tests/rpl_parallel_simple_load.test;
+disable_result_log;
+disable_query_log;
+create table t1(a int) engine=innodb;
+# the following loop will generate 300 meta data events, 1 for each statement
+# the total number of meta data events will be 301, +1 for create stmt above
+let $iter= 100;
+while ($iter > 0)
+{
+  begin;
+  eval insert into t1 values($iter);
+  eval update t1 set a= $iter + 1;
+  delete from t1;
+  commit;
+  dec $iter;
+}
 enable_result_log;
+enable_query_log;
+sync_slave_with_master;
 
 # Check binlogs for meta data
 connection master;
+disable_query_log;
 let $MYSQLD_DATADIR = `select @@datadir`;
 let $MYSQLD_SECURE_FILE_DIR = `select @@secure_file_priv`;
 exec $MYSQL_BINLOG -v -v $MYSQLD_DATADIR/master-bin.0* | grep "::TRX_META_DATA::" | sed 's/\"[0-9]*\"/ts/g' > $MYSQLD_SECURE_FILE_DIR/meta_data.dat;
@@ -43,16 +55,12 @@ select meta, count(*) from test.meta_data;
 drop table test.meta_data;
 set sql_log_bin=1;
 remove_file $MYSQLD_SECURE_FILE_DIR/meta_data.dat;
-
-# Consistency check
-connection master;
-let $include_silent=1;
-source extra/rpl_tests/rpl_parallel_simple_load_consistency.test;
-let $include_silent=;
+enable_query_log;
 
 # Cleanup
 connection master;
-source extra/rpl_tests/rpl_parallel_simple_load_cleanup.test;
+drop table t1;
+sync_slave_with_master;
 connection slave;
 set @@global.binlog_trx_meta_data= @save.binlog_trx_meta_data;
 connection master;

sql/binlog.cc

@@ -340,7 +340,8 @@ class binlog_cache_data
   void add_time_meta_data(THD *thd, ptree &meta_data_root);
   int finalize(THD *thd, Log_event *end_event);
   int flush(THD *thd, my_off_t *bytes, bool *wrote_xid, bool async);
-  int write_event(THD *thd, Log_event *event);
+  int write_event(THD *thd, Log_event *event,
+                  bool write_meta_data_event= false);
 
   virtual ~binlog_cache_data()
   {
@@ -981,7 +982,9 @@ static bool should_write_gtids(THD *thd) {
   return (!read_only || thd->variables.gtid_next.type == GTID_GROUP);
 }
 
-int binlog_cache_data::write_event(THD *thd, Log_event *ev)
+int binlog_cache_data::write_event(THD *thd,
+                                   Log_event *ev,
+                                   bool write_meta_data_event)
 {
   DBUG_ENTER("binlog_cache_data::write_event");
 
@@ -1001,6 +1004,11 @@ int binlog_cache_data::write_event(THD *thd, Log_event *ev)
 
   if (ev != NULL)
   {
+    // case: write meta data event before the real event
+    // see @opt_binlog_trx_meta_data
+    if (write_meta_data_event && write_trx_meta_data(thd))
+      DBUG_RETURN(1);
+
     DBUG_EXECUTE_IF("simulate_disk_full_at_flush_pending",
                   {DBUG_SET("+d,simulate_file_write_error");});
     if (ev->write(&cache_log) != 0)
@@ -5830,7 +5838,9 @@ MYSQL_BIN_LOG::flush_and_set_pending_rows_event(THD *thd,
   Write an event to the binary log.
 */
 
-bool MYSQL_BIN_LOG::write_event(Log_event *event_info, int force_cache_type)
+bool MYSQL_BIN_LOG::write_event(Log_event *event_info,
+                                int force_cache_type,
+                                bool write_meta_data_event)
 {
   THD *thd= event_info->thd;
   bool error= 1;
@@ -5980,7 +5990,7 @@ bool MYSQL_BIN_LOG::write_event(Log_event *event_info, int force_cache_type)
     /*
       Write the event.
     */
-    if (cache_data->write_event(thd, event_info) ||
+    if (cache_data->write_event(thd, event_info, write_meta_data_event) ||
         DBUG_EVALUATE_IF("injecting_fault_writing", true, false))
       goto err;
 
@@ -8397,11 +8407,6 @@ int THD::binlog_write_table_map(TABLE *table, bool is_transactional,
   binlog_cache_data *cache_data=
     cache_mngr->get_binlog_cache_data(is_transactional);
 
-  // case: add meta data in the binlog
-  if (opt_binlog_trx_meta_data &&
-      (error= cache_data->write_trx_meta_data(this)))
-      DBUG_RETURN(error);
-
   if (binlog_rows_query && this->query())
   {
     /* Write the Rows_query_log_event into binlog before the table map */
@@ -8411,7 +8416,8 @@ int THD::binlog_write_table_map(TABLE *table, bool is_transactional,
       DBUG_RETURN(error);
   }
 
-  if ((error= cache_data->write_event(this, &the_event)))
+  if ((error= cache_data->write_event(this, &the_event,
+                                      opt_binlog_trx_meta_data)))
     DBUG_RETURN(error);
 
   binlog_table_maps++;
@@ -10233,7 +10239,11 @@ int THD::binlog_query(THD::enum_binlog_query_type qtype, char const *query_arg,
         log event is written to the binary log, we pretend that no
         table maps were written.
        */
-      int error= mysql_bin_log.write_event(&qinfo);
+      int error= mysql_bin_log.write_event(&qinfo,
+                                           /* default parameter */
+                                           Log_event::EVENT_INVALID_CACHE,
+                                           /* write meta data before query? */
+                                           opt_binlog_trx_meta_data);
       binlog_table_maps= 0;
       DBUG_RETURN(error);
     }

sql/binlog.h

@@ -664,7 +664,8 @@ class MYSQL_BIN_LOG: public TC_LOG, private MYSQL_LOG
   int new_file(Format_description_log_event *extra_description_event);
 
   bool write_event(Log_event* event_info,
-                   int force_cache_type = Log_event::EVENT_INVALID_CACHE);
+                   int force_cache_type = Log_event::EVENT_INVALID_CACHE,
+                   bool write_meta_data_event= false);
   bool write_cache(THD *thd, class binlog_cache_data *binlog_cache_data,
                    bool async);
   int  do_write_cache(IO_CACHE *cache);