| Managing Metadata Server Performance |
Because
all metadata is held in memory, and because all updates to the metadata are
single-threaded, you do not have to configure input/output contentions. Queries
cause I/O activity only when the metadata
is initially loaded into memory based on type. For example, when a user requests
metadata for a specific column, metadata for all columns is loaded into memory.
No additional I/O for column metadata queries will occur until the server
is paused and resumed or stopped and restarted.
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