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### What changes were proposed in this pull request? Change the link to the Scala API document. ``` $ git grep "#org.apache.spark.package" docs/_layouts/global.html: <li><a href="api/scala/index.html#org.apache.spark.package">Scala</a></li> docs/index.md:* [Spark Scala API (Scaladoc)](api/scala/index.html#org.apache.spark.package) docs/rdd-programming-guide.md:[Scala](api/scala/#org.apache.spark.package), [Java](api/java/), [Python](api/python/) and [R](api/R/). ``` ### Why are the changes needed? The home page link for Scala API document is incorrect after upgrade to 3.0 ### Does this PR introduce any user-facing change? Document UI change only. ### How was this patch tested? Local test, attach screenshots below: Before:  After:  Closes #27549 from xuanyuanking/scala-doc. Authored-by: Yuanjian Li <xyliyuanjian@gmail.com> Signed-off-by: Sean Owen <srowen@gmail.com>
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| layout | title | displayTitle | license |
|---|---|---|---|
| global | REFRESH | REFRESH | 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 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. |
Description
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.
Syntax
{% highlight sql %} REFRESH resource_path {% endhighlight %}
Parameters
resource_path- The path of the resource that is to be refreshed.
Examples
{% highlight sql %} -- 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";
{% endhighlight %}