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	The sequence that causes the issue:
1. file->row_logging is false because slave-bin was not open;
2. TABLE::mark_columns_per_binlog_row_image() didn't mark column for
   read because file->row_logginbg is false. This was implemented in
   e53ad95b73 (MDEV-6877);
3. TABLE::update_virtual_fields() didn't update virtual field value
   because column is not marked for read;
4. calc_row_difference() sees o_len as UNIV_SQL_NULL, but new row
   value is "1". The virtual column is added to update vector;
5. row_upd() tries to update secondary index, but row_upd_sec_step()
   doesn't see old value in the index.
The patch does mark_virtual_column_with_deps() via
column_bitmaps_signal() in case of rgi_slave in
mark_columns_per_binlog_row_image() so that non-stored virtual columns
are marked for update in slave thread.
Also fixed column_bitmaps_signal() for partitioning where the signal
did not reach the partition storage engine.
		
	
			
		
			
				
	
	
		
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			35 lines
		
	
	
	
		
			897 B
		
	
	
	
		
			Text
		
	
	
	
	
	
--source include/have_innodb.inc
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--source include/have_partition.inc
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--source include/have_binlog_format_row.inc
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--source include/master-slave.inc
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--echo #
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--echo # MDEV-33957 UPDATE fails on replica replicating blob virtual column in
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--echo #            NOBLOB mode when replica logging is off
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--echo #
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--connection slave
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select @@log_slave_updates;
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--connection master
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set binlog_row_image= 'NOBLOB';
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create table t (
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  c int primary key, d int,
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  i blob generated always as (c), key k(i)) engine=innodb;
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insert into t (c) values (1);
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update t set d= 0;
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--sync_slave_with_master
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--connection master
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drop table t;
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create table t (
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  c int primary key, d int,
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  i blob generated always as (c), key k(i)) engine=innodb
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  partition by key (c) partitions 2;
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insert into t (c) values (1);
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update t set d= 0;
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--sync_slave_with_master
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--connection master
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drop table t;
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--source include/rpl_end.inc
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