DROP CACHE
Synopsis
DROP CACHE table WHERE condition;
Description
DROP CACHE deletes cache metadata of the table from coordinator only. Workers' caches purged automatically by expiry time
or by reaching size limit but recurring splits will not reuse any cached node assignments.
Examples
DROP CACHE command supports dropping specific cache records by matching the corresponding predicate string.
For example, if SHOW CACHE command shows that there is a record with predicate string
of sale_id = 24 under the table of sales, then running the following query can delete it without
affecting any other cache record:
DROP CACHE sales WHERE sale_id = 24;
Or simply drop all cache metadata for 'sales' table by running:
DROP CACHE sales;
Limitations
Only Hive connector support this functionality at this time. See connector documentation for more details.
