diff options
Diffstat (limited to 'storage/myisam/ha_myisam.cc')
| -rw-r--r-- | storage/myisam/ha_myisam.cc | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/storage/myisam/ha_myisam.cc b/storage/myisam/ha_myisam.cc index fdc43a3fc30..d20148f5be5 100644 --- a/storage/myisam/ha_myisam.cc +++ b/storage/myisam/ha_myisam.cc @@ -1775,7 +1775,7 @@ int ha_myisam::info(uint flag) if (share->key_parts) memcpy((char*) table->key_info[0].rec_per_key, (char*) misam_info.rec_per_key, - sizeof(table->key_info[0].rec_per_key)*share->key_parts); + sizeof(table->key_info[0].rec_per_key[0])*share->key_parts); if (share->tmp_table == NO_TMP_TABLE) pthread_mutex_unlock(&share->mutex); @@ -1811,6 +1811,8 @@ int ha_myisam::extra(enum ha_extra_function operation) { if ((specialflag & SPECIAL_SAFE_MODE) && operation == HA_EXTRA_KEYREAD) return 0; + if (operation == HA_EXTRA_MMAP && !opt_myisam_use_mmap) + return 0; return mi_extra(file, operation, 0); } @@ -2195,6 +2197,15 @@ my_bool ha_myisam::register_query_cache_table(THD *thd, char *table_name, } } + /* + This query execution might have started after the query cache was flushed + by a concurrent INSERT. In this case, don't cache this statement as the + data file length difference might not be visible yet if the tables haven't + been unlocked by the concurrent insert thread. + */ + if (file->state->uncacheable) + DBUG_RETURN(FALSE); + /* It is ok to try to cache current statement. */ DBUG_RETURN(TRUE); } |