From 73f10f0662ce40b5cc6e8bc4d04f6cee45768ae7 Mon Sep 17 00:00:00 2001 From: Luis Soares Date: Thu, 21 Jan 2010 17:20:24 +0000 Subject: BUG#49481: RBR: MyISAM and bit fields may cause slave to stop on delete: cant find record Some engines return data for the record. Despite the fact that the null bit is set for some fields, their old value may still in the row. This can happen when unpacking an AI from the binlog on top of a previous record in which a field is set to NULL, which previously contained a value. Ultimately, this may cause the comparison of records to fail when the slave is doing an index or range scan. We fix this by deploying a call to reset() for each field that is set to null while unpacking a row from the binary log. Furthermore, we also add mixed mode test case to cover the scenario where updating and setting a field to null through a Query event and later searching it through a rows event will succeed. Finally, we also change the reset() method, from Field_bit class, so that it takes into account bits stored among the null bits and not only the ones stored in the record. mysql-test/suite/rpl/t/rpl_set_null_innodb.test: InnoDB test. mysql-test/suite/rpl/t/rpl_set_null_myisam.test: MyISAM test. mysql-test/suite/rpl_ndb/t/rpl_ndb_set_null.test: NDB test. sql/field.h: Changed reset so that it also clears the bits among the null_bits for the Field_bit class. sql/rpl_record.cc: Resetting field after setting it to null when unpacking row. --- mysql-test/suite/rpl/t/rpl_set_null_myisam.test | 5 +++++ 1 file changed, 5 insertions(+) create mode 100644 mysql-test/suite/rpl/t/rpl_set_null_myisam.test (limited to 'mysql-test/suite/rpl/t/rpl_set_null_myisam.test') diff --git a/mysql-test/suite/rpl/t/rpl_set_null_myisam.test b/mysql-test/suite/rpl/t/rpl_set_null_myisam.test new file mode 100644 index 00000000000..7b433071553 --- /dev/null +++ b/mysql-test/suite/rpl/t/rpl_set_null_myisam.test @@ -0,0 +1,5 @@ +-- source include/have_binlog_format_mixed_or_row.inc +-- source include/master-slave.inc + +-- let $engine= MyISAM +-- source extra/rpl_tests/rpl_set_null.test -- cgit v1.2.1