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MDEV-12179: Per-engine mysql.gtid_slave_pos table

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Intermediate commit.

For each GTID recorded in mysq.gtid_slave_pos, keep track of which
engine the update was made in.

This will be later used to know which rows can be deleted in the table
of a given engine.
This commit is contained in:
Kristian Nielsen
2017-03-09 13:27:27 +01:00
parent 087cf02328
commit c995ecbe98
4 changed files with 52 additions and 28 deletions
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18
sql/rpl_gtid.h
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@@ -112,6 +112,7 @@ struct rpl_slave_state
uint64 sub_id;
uint64 seq_no;
uint32 server_id;
void *hton;
};
/* Elements in the HASH that hold the state for one domain_id. */
@@ -158,7 +159,13 @@ struct rpl_slave_state
/* Descriptor for mysql.gtid_slave_posXXX table in specific engine. */
struct gtid_pos_table {
struct gtid_pos_table *next;
handlerton *table_hton;
/*
Use a void * here, rather than handlerton *, to make explicit that we
are not using the value to access any functionality in the engine. It
is just used as an opaque value to identify which engine we are using
for each GTID row.
*/
void *table_hton;
LEX_STRING table_name;
};
@@ -179,10 +186,10 @@ struct rpl_slave_state
void truncate_hash();
ulong count() const { return hash.records; }
int update(uint32 domain_id, uint32 server_id, uint64 sub_id,
uint64 seq_no, rpl_group_info *rgi);
uint64 seq_no, void *hton, rpl_group_info *rgi);
int truncate_state_table(THD *thd);
int record_gtid(THD *thd, const rpl_gtid *gtid, uint64 sub_id,
bool in_transaction, bool in_statement);
bool in_transaction, bool in_statement, void **out_hton);
uint64 next_sub_id(uint32 domain_id);
int iterate(int (*cb)(rpl_gtid *, void *), void *data,
rpl_gtid *extra_gtids, uint32 num_extra,
@@ -196,12 +203,13 @@ struct rpl_slave_state
element *get_element(uint32 domain_id);
int put_back_list(uint32 domain_id, list_element *list);
void update_state_hash(uint64 sub_id, rpl_gtid *gtid, rpl_group_info *rgi);
void update_state_hash(uint64 sub_id, rpl_gtid *gtid, void *hton,
rpl_group_info *rgi);
int record_and_update_gtid(THD *thd, struct rpl_group_info *rgi);
int check_duplicate_gtid(rpl_gtid *gtid, rpl_group_info *rgi);
void release_domain_owner(rpl_group_info *rgi);
void set_gtid_pos_tables_list(struct gtid_pos_table *new_list);
struct gtid_pos_table *alloc_gtid_pos_table(LEX_STRING *table_name, handlerton *hton);
struct gtid_pos_table *alloc_gtid_pos_table(LEX_STRING *table_name, void *hton);
void free_gtid_pos_tables(struct gtid_pos_table *list);
};