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package org.apache.lucene.index;
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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import java.io.IOException;
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/** A {@link MergeScheduler} that simply does each merge
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* sequentially, using the current thread. */
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public class SerialMergeScheduler extends MergeScheduler {
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/** Just do the merges in sequence. We do this
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* "synchronized" so that even if the application is using
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* multiple threads, only one merge may run at a time. */
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synchronized public void merge(IndexWriter writer)
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throws CorruptIndexException, IOException {
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MergePolicy.OneMerge merge = writer.getNextMerge();
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public void close() {}