ColumnStore Utility Functions

MariaDB ColumnStore utility functions report system status: mcsSystemReady() indicates whether queries are accepted, and mcsSystemReadOnly() reports read-only or suspended state.

MariaDB ColumnStore utility functions are a set of simple functions that return useful information about the system, such as whether it is ready for queries.

Function	Description
mcsSystemReady()	Returns 1 if the system can accept queries, 0 if it's not ready yet.
mcsSystemReadOnly()	Returns 1 if ColumnStore is in a write-suspended mode. That is, a user executed the SuspendDatabaseWrites. It returns 2 if in a read-only state. ColumnStore puts itself into a read-only state if it detects a logic error that may have corrupted data. Generally, it means a ROLLBACK operation failed. Returns 0 if the system is writable.

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