--source include/have_debug.inc --source include/count_sessions.inc --source include/have_innodb_max_16k.inc SET @orig_log_error_verbosity= @@GLOBAL.log_error_verbosity; SET GLOBAL log_error_verbosity=3; set global innodb_compression_level = 0; CREATE TABLE tab82 (col28 JSON) row_format=compressed; set @json_doc_1 = concat('["OpenSource", "', repeat('Linux+Ubuntu+', 16000), '"]'); set @json_doc_2 = concat('["OpenSource", "', repeat('MySQL+Oracle+', 16000), '"]'); set @data_1 = repeat('Linux+Ubuntu+', 16000); set @data_2 = repeat('MySQL+Oracle+', 16000); INSERT INTO tab82 VALUES (@json_doc_1); --echo # Connection default: --echo # Linux+Ubuntu start transaction with consistent snapshot; select strcmp(col28, @json_doc_1) = 0 from tab82; select cast(col28 as char) = @json_doc_1 from tab82; select length(col28) from tab82; select json_extract(col28, '$[1]') = @data_1 from tab82; --echo # Connection con1: connect (con1,localhost,root,,); connection con1; set @json_doc_1 = concat('["OpenSource", "', repeat('Linux+Ubuntu+', 16000), '"]'); set @json_doc_2 = concat('["OpenSource", "', repeat('MySQL+Oracle+', 16000), '"]'); set @data_1 = repeat('Linux+Ubuntu+', 16000); set @data_2 = repeat('MySQL+Oracle+', 16000); set debug = '+d,zlob_print_partial_update_hit'; start transaction; UPDATE tab82 SET col28 = JSON_SET(col28, '$[1]', @data_2); --echo # MySQL+Oracle select strcmp(col28, @json_doc_2) = 0 from tab82; select cast(col28 as char) = @json_doc_2 from tab82; select length(col28) from tab82; select json_extract(col28, '$[1]') = @data_2 from tab82; --echo # Connection default: connection default; --echo # Linux+Ubuntu select strcmp(col28, @json_doc_1) = 0 from tab82; select cast(col28 as char) = @json_doc_1 from tab82; select length(col28) from tab82; select json_extract(col28, '$[1]') = @data_1 from tab82; --echo # Connection con1: connection con1; --echo # MySQL+Oracle select strcmp(col28, @json_doc_2) = 0 from tab82; select cast(col28 as char) = @json_doc_2 from tab82; select length(col28) from tab82; select json_extract(col28, '$[1]') = @data_2 from tab82; commit; --echo # Connection default: connection default; disconnect con1; --echo # Linux+Ubuntu select strcmp(col28, @json_doc_1) = 0 from tab82; select cast(col28 as char) = @json_doc_1 from tab82; select length(col28) from tab82; select json_extract(col28, '$[1]') = @data_1 from tab82; commit; --echo # MySQL+Oracle select strcmp(col28, @json_doc_2) = 0 from tab82; select cast(col28 as char) = @json_doc_2 from tab82; select length(col28) from tab82; select json_extract(col28, '$[1]') = @data_2 from tab82; let SEARCH_FILE= $MYSQLTEST_VARDIR/log/mysqld.1.err; let SEARCH_PATTERN= ZLOB partial update of field=\\(col28\\) on index=\\(\\`GEN_CLUST_INDEX\\`\\) in table=\\(test/tab82\\); --source include/search_pattern.inc drop table tab82; set debug = '-d,zlob_print_partial_update_hit'; set global innodb_compression_level = default; SET GLOBAL log_error_verbosity= @orig_log_error_verbosity;