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MDEV-26: Global transaction ID.

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Fix initial loading of mysql.rpl_slave_state, the code had several
issues.

Some very basic MTR stuff, more to come.
This commit is contained in:
unknown
2013-02-18 15:41:17 +01:00
parent bfa3f15416
commit ff8676e0e1
6 changed files with 170 additions and 10 deletions
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65
sql/sql_repl.cc
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@@ -3035,11 +3035,21 @@ rpl_load_gtid_slave_state(THD *thd)
TABLE *table;
bool table_opened= false;
bool table_scanned= false;
struct local_element { uint64 sub_id; rpl_gtid gtid; };
struct local_element *entry;
HASH hash;
int err= 0;
uint32 i;
DBUG_ENTER("rpl_load_gtid_slave_state");
int err= 0;
my_hash_init(&hash, &my_charset_bin, 32,
offsetof(local_element, gtid) + offsetof(rpl_gtid, domain_id),
sizeof(uint32), NULL, my_free, HASH_UNIQUE);
rpl_global_gtid_slave_state.lock();
if (rpl_global_gtid_slave_state.loaded)
bool loaded= rpl_global_gtid_slave_state.loaded;
rpl_global_gtid_slave_state.unlock();
if (loaded)
goto end;
mysql_reset_thd_for_next_command(thd, 0);
@@ -3069,6 +3079,8 @@ rpl_load_gtid_slave_state(THD *thd)
{
uint32 domain_id, server_id;
uint64 sub_id, seq_no;
uchar *rec;
if ((err= table->file->ha_rnd_next(table->record[0])))
{
if (err == HA_ERR_RECORD_DELETED)
@@ -3085,13 +3097,50 @@ rpl_load_gtid_slave_state(THD *thd)
DBUG_PRINT("info", ("Read slave state row: %u:%u-%lu sub_id=%lu\n",
(unsigned)domain_id, (unsigned)server_id,
(ulong)seq_no, (ulong)sub_id));
if ((err= rpl_global_gtid_slave_state.update(domain_id, server_id,
sub_id, seq_no)))
goto end;
}
err= 0; /* Clear HA_ERR_END_OF_FILE */
if ((rec= my_hash_search(&hash, (const uchar *)&domain_id, 0)))
{
entry= (struct local_element *)rec;
if (entry->sub_id >= sub_id)
continue;
}
else
{
if (!(entry= (struct local_element *)my_malloc(sizeof(*entry),
MYF(MY_WME))))
{
err= 1;
goto end;
}
if ((err= my_hash_insert(&hash, (uchar *)entry)))
{
my_free(entry);
goto end;
}
}
entry->sub_id= sub_id;
entry->gtid.domain_id= domain_id;
entry->gtid.server_id= server_id;
entry->gtid.seq_no= seq_no;
}
rpl_global_gtid_slave_state.lock();
for (i= 0; i < hash.records; ++i)
{
entry= (struct local_element *)my_hash_element(&hash, i);
if ((err= rpl_global_gtid_slave_state.update(entry->gtid.domain_id,
entry->gtid.server_id,
entry->sub_id,
entry->gtid.seq_no)))
{
rpl_global_gtid_slave_state.unlock();
goto end;
}
}
rpl_global_gtid_slave_state.loaded= true;
rpl_global_gtid_slave_state.unlock();
err= 0; /* Clear HA_ERR_END_OF_FILE */
end:
if (table_scanned)
@@ -3102,7 +3151,7 @@ end:
}
if (table_opened)
close_thread_tables(thd);
rpl_global_gtid_slave_state.unlock();
my_hash_free(&hash);
DBUG_RETURN(err);
}