检查/etc/passwd和/etc/group/文件,查看在系统上是否已经存在mysql组和mysql用户,这时因为某些操作系统会将其作为安装进程的一部分创建。可以使用以下指令查看: cat show /etc/passwd cat show /etc/group 如果它们不存在,则需要创建新的mysql用户组,然后为该组添加一个mysql用户 groupadd mysql useradd -g mysql ...
The MySQL servers involved in replication should in this case be restarted. After this, you should use the RESET MASTER and RESET REPLICA (prior to NDB 8.0.22, use RESET SLAVE) statements to clear the invalid ndb_binlog_index and ndb_apply_status tables, respectively. ...
The MySQL servers involved in replication should in this case be restarted. After this, you should use the RESET MASTER and RESET SLAVE statements to clear the invalid ndb_binlog_index and ndb_apply_status tables, respectively. Replication from NDB to other storage engines. It is possible ...
In the past, altering a non-optimal query plans required the manual enforcement of indexes via USE INDEX or FORCE INDEX. To get maximum benefit from AQL, it is strongly recommended to run the ANALYZE_TABLE command before the table is queried for the first time....
only entire columns can be indexed (The size of an NDB column index is always the same as the width of the column in bytes, up to and including 3072 bytes, as described earlier in this section. Also see Section 18.1.6.6, “Unsupported or Missing Features in MySQL Cluster”, for addition...
mysql cluster 支持inodb引擎吗 mysql支持的引擎版本号 mysql从5.5.8版本开始,Innodb存储引擎是默认的存储引擎,之前默认为MyISAM Innodb存储引擎 支持事务 行锁设计、支持外键,支持类似于oracle的非锁定读 Innodb从4.1版本开始将每个表放到一个独立的idb文件中...
A new Index Statistics function enables the SQL optimizer to build a better execution plan for each query. In the past, altering a non-optimal query plans required the manual enforcement of indexes via USE INDEX or FORCE INDEX. To get maximum benefit from AQL, it is strongly recommended to ...
DataDir=/var/lib/MySQL-cluster [ndb_mgmd] #Management Node db1 HostName=192.168.1.51 [ndbd default] NoOfReplicas=2 # Number of replicas DataMemory=256M # Memory allocate for data storage IndexMemory=128M # Memory allocate for index storage ...
The Galera Replication library has had some notable fixes, one of which improves memory usage tremendously. The in-memory GCache index implementation now uses sortedstd::dequeinstead ofstd::map, and this leads to aneightfold reduction in memory footprint. Hardware CRC32 is now supported onx86_64...
| relay_log_index | /home/scruise/mysql-sandboxes/3310/sandboxdata/innodb-cluster-relay-bin.index | | slow_query_log_file | /home/scruise/mysql-sandboxes/3310/sandboxdata/innodb-cluster-slow.log | 555 rows in set (0.01 sec) Does...