clohfink commented on a change in pull request #402: New/virtualtables
URL: https://github.com/apache/cassandra/pull/402#discussion_r379486460
 
 

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 File path: doc/source/new/virtualtables.rst
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+.. 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
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+.. See the License for the specific language governing permissions and
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+
+Virtual Tables
+--------------
+
+Apache Cassandra 4.0 implements virtual tables (`CASSANDRA-7622
+<https://issues.apache.org/jira/browse/CASSANDRA-7622>`_).
+
+Definition
+^^^^^^^^^^
+
+A virtual table is a table that is backed by an API instead of data explicitly 
managed and stored as SSTables. Apache Cassandra 4.0 implements a virtual 
keyspace interface for virtual tables. Virtual tables are specific to each 
node. 
+
+Objective
+^^^^^^^^^
+
+A virtual table could have several uses including:
+
+- Expose JMX data/metrics through CQL
 
 Review comment:
   It does not expose JMX data, can just list expose metrics through CQL

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