spark RocksDB 源码
spark RocksDB 代码
文件路径：/common/network-common/src/main/java/org/apache/spark/network/shuffledb/RocksDB.java
/*
* 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.spark.network.shuffledb;
import java.io.IOException;
import com.google.common.base.Throwables;
import org.rocksdb.RocksDBException;
/**
* RocksDB implementation of the local KV storage used to persist the shuffle state.
*/
public class RocksDB implements DB {
private final org.rocksdb.RocksDB db;
public RocksDB(org.rocksdb.RocksDB db) {
this.db = db;
}
@Override
public void put(byte[] key, byte[] value) {
try {
db.put(key, value);
} catch (RocksDBException e) {
throw Throwables.propagate(e);
}
}
@Override
public byte[] get(byte[] key) {
try {
return db.get(key);
} catch (RocksDBException e) {
throw Throwables.propagate(e);
}
}
@Override
public void delete(byte[] key) {
try {
db.delete(key);
} catch (RocksDBException e) {
throw Throwables.propagate(e);
}
}
@Override
public DBIterator iterator() {
return new RocksDBIterator(db.newIterator());
}
@Override
public void close() throws IOException {
db.close();
}
}
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