org.apache.flink.runtime.checkpoint.KeyGroupState Maven / Gradle / Ivy
/*
* 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.checkpoint;
import org.apache.flink.runtime.state.StateHandle;
import org.apache.flink.util.SerializedValue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.Serializable;
/**
* Simple container class which contains the serialized state handle for a key group.
*
* The key group state handle is kept in serialized form because it can contain user code classes
* which might not be available on the JobManager.
*/
public class KeyGroupState implements Serializable {
private static final long serialVersionUID = -5926696455438467634L;
private static final Logger LOG = LoggerFactory.getLogger(KeyGroupState.class);
private final SerializedValue> keyGroupState;
private final long stateSize;
private final long duration;
public KeyGroupState(SerializedValue> keyGroupState, long stateSize, long duration) {
this.keyGroupState = keyGroupState;
this.stateSize = stateSize;
this.duration = duration;
}
public SerializedValue> getKeyGroupState() {
return keyGroupState;
}
public long getDuration() {
return duration;
}
public long getStateSize() {
return stateSize;
}
public void discard(ClassLoader classLoader) throws Exception {
keyGroupState.deserializeValue(classLoader).discardState();
}
@Override
public boolean equals(Object obj) {
if (obj instanceof KeyGroupState) {
KeyGroupState other = (KeyGroupState) obj;
return keyGroupState.equals(other.keyGroupState) && stateSize == other.stateSize &&
duration == other.duration;
} else {
return false;
}
}
@Override
public int hashCode() {
return (int) (this.stateSize ^ this.stateSize >>> 32) +
31 * ((int) (this.duration ^ this.duration >>> 32) +
31 * keyGroupState.hashCode());
}
}