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From StephanEwen <...@git.apache.org>
Subject [GitHub] flink pull request #4907: [FLINK-5823] [checkpoints] State Backends also han...
Date Thu, 26 Oct 2017 09:30:28 GMT
Github user StephanEwen commented on a diff in the pull request:

    https://github.com/apache/flink/pull/4907#discussion_r147089435
  
    --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/state/ConfigurableStateBackend.java
---
    @@ -0,0 +1,45 @@
    +/*
    + * 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.
    + */
    +
    +package org.apache.flink.runtime.state;
    +
    +import org.apache.flink.configuration.Configuration;
    +import org.apache.flink.configuration.IllegalConfigurationException;
    +
    +/**
    + *An interface for state backends that pick up additional parameters from a configuration.
    + */
    +public interface ConfigurableStateBackend {
    +
    +	/**
    +	 * Creates a variant of the state backend that applies additional configuration parameters.
    +	 *
    +	 * <p>Settings that were directly done on the original state backend object in
the application
    +	 * program typically have precedence over setting picked up from the configuration.
    +	 *
    +	 * <p>If no configuration is applied, or if the method directly applies configuration
values to
    +	 * the (mutable) state backend object, this method may return the original state backend
object.
    +	 * Otherwise it typically returns a modified copy.
    +	 *
    +	 * @param config The configuration to pick the values from. 
    +	 * @return A copy of th
    --- End diff --
    
    Will fix that...


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