layout: global title: REFRESH displayTitle: REFRESH license: | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
REFRESH
is used to invalidate and refresh all the cached data (and the associated metadata) for all Datasets that contains the given data source path. Path matching is by prefix, i.e. “/” would invalidate everything that is cached.
REFRESH resource_path
resource_path
The path of the resource that is to be refreshed.
-- The Path is resolved using the datasource's File Index. CREATE TABLE test(ID INT) using parquet; INSERT INTO test SELECT 1000; CACHE TABLE test; INSERT INTO test SELECT 100; REFRESH "hdfs://path/to/table";