clearComputeNodeCache

clearComputeNodeCache(database, [table], [partition])

database is a string indicating the database name.

table (optional) is a string indicating the table name. It can contain the following wildcards:

• "*" (default): matches all;

• "?": matches a single character;

• "%": matches 0, 1 or more characters.

partition (optional) is a STRING scalar or vector indicating the DFS path of a partition. If partition is not specified, it indicates all partitions.

Call the function on a compute node within a compute group to clear the memory and disk cache.

Note: Executing this function does not guarantee that all cached data will be cleared.

Clear the memory cache and disk cache of the “database_compute” database.

clearComputeNodeCache("dfs://database_compute")      

Clear the memory cache and disk cache of tables with the prefix of “pt” in the “database_compute” database.

clearComputeNodeCache("dfs://database_compute","pt%")