clearComputeNodeDiskCache

clearComputeNodeDiskCache(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.

On a compute node in the compute group, invoke the function to clear the disk cache. Note that this operation cannot guarantee a complete cache clearing.

Clear the disk cache of the “database_compute” database.

clearComputeNodeDiskCache("dfs://database_compute")      

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

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