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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* 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.cassandra.service.reads.repair;
import java.util.Map;
import java.util.function.Consumer;
import org.apache.cassandra.db.DecoratedKey;
import org.apache.cassandra.db.Mutation;
import org.apache.cassandra.db.partitions.PartitionIterator;
import org.apache.cassandra.db.partitions.UnfilteredPartitionIterators;
import org.apache.cassandra.exceptions.ReadTimeoutException;
import org.apache.cassandra.locator.Endpoints;
import org.apache.cassandra.locator.Replica;
import org.apache.cassandra.locator.ReplicaPlan;
import org.apache.cassandra.service.reads.DigestResolver;
/**
* Bypasses the read repair path for short read protection and testing
*/
public class NoopReadRepair, P extends ReplicaPlan.ForRead> implements ReadRepair
{
public static final NoopReadRepair instance = new NoopReadRepair();
private NoopReadRepair() {}
@Override
public UnfilteredPartitionIterators.MergeListener getMergeListener(P replicas)
{
return UnfilteredPartitionIterators.MergeListener.NOOP;
}
@Override
public void startRepair(DigestResolver digestResolver, Consumer resultConsumer)
{
resultConsumer.accept(digestResolver.getData());
}
public void awaitReads() throws ReadTimeoutException
{
}
@Override
public void maybeSendAdditionalReads()
{
}
@Override
public void maybeSendAdditionalWrites()
{
}
@Override
public void awaitWrites()
{
}
@Override
public void repairPartition(DecoratedKey partitionKey, Map mutations, ReplicaPlan.ForWrite writePlan)
{
}
}