
com.google.cloud.dataflow.sdk.util.state.WatermarkStateInternal Maven / Gradle / Ivy
/*
* Copyright (C) 2015 Google Inc.
*
* Licensed 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 com.google.cloud.dataflow.sdk.util.state;
import com.google.cloud.dataflow.sdk.annotations.Experimental;
import com.google.cloud.dataflow.sdk.annotations.Experimental.Kind;
import org.joda.time.Instant;
/**
* State for holding up the watermark to the minimum of input {@code Instant}s.
*
* This is intended for internal use only. The watermark will be held up based on the
* values that are added and only released when items are cleared.
*/
@Experimental(Kind.STATE)
public interface WatermarkStateInternal extends MergeableState {}
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