MySQL Cluster is a technology which provides a way for clustering of in-memory databases in a shared-nothing system.
The shared-nothing architecture allows the system to work with very inexpensive hardware, and with a minimum of specific requirements for hardware or software.
MySQL Cluster is designed not to have any single point of failure.
For this reason, each component is expected to have its own memory and disk, and the use of shared storage mechanisms such as network shares, network file systems, and SANs is not recommended or supported.
What's New in This Release: [ read full changelog ]
· At the beginning of a local checkpoint, each data node marks its local tables with a “to be checkpointed” flag. A failure of the master node during this process could cause either the LCP to hang, or one or more data nodes to be forcibly shut down.
· A node failure while a ANALYZE TABLE statement was executing resulted in a hung connection (and the user was not informed of any error that would cause this to happen).
· Cluster Replication: Under certain circumstances, the Rows count in the output of SHOW TABLE STATUS for a replicated slave NDB table could be misreported as many times larger than the result of SELECT COUNT(*) on the same table.