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15.5 Upgrading and Downgrading MySQL Cluster »
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15.4.4. MySQL Cluster Status Variables

This section provides detailed information about MySQL server status variables that relate to MySQL Cluster and the NDB storage engine. For status variables not specific to MySQL Cluster, and for general information on using status variables, see Section 5.1.6, “Status Variables”.

  • have_ndbcluster

    YES if mysqld supports NDBCLUSTER tables. DISABLED if --skip-ndbcluster is used. This variable was added in MySQL 4.1.2.

  • Handler_discover

    The MySQL server can ask the NDBCLUSTER storage engine if it knows about a table with a given name. This is called discovery. Handler_discover indicates the number of times that tables have been discovered. This variable was added in MySQL 4.1.2.