uschindler commented on code in PR #11796: URL: https://github.com/apache/lucene/pull/11796#discussion_r983565903
########## lucene/misc/src/java/org/apache/lucene/misc/store/ByteWritesTrackingDirectoryWrapper.java: ########## @@ -0,0 +1,118 @@ +/* + * 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.lucene.misc.store; + +import java.io.IOException; +import java.util.concurrent.atomic.AtomicLong; +import org.apache.lucene.store.Directory; +import org.apache.lucene.store.FilterDirectory; +import org.apache.lucene.store.IOContext; +import org.apache.lucene.store.IndexOutput; + +/** {@link FilterDirectory} that tracks write amplification factor */ +public final class ByteWritesTrackingDirectoryWrapper extends FilterDirectory { + + private final AtomicLong flushedBytes = new AtomicLong(); + private final AtomicLong mergedBytes = new AtomicLong(); + private final AtomicLong realTimeFlushedBytes = new AtomicLong(); Review Comment: If you are wondering why getFilePointer() works: The name getFilePointer() is a bit misnomed from former times. Nowadays you can't seek while writing to IndexOutput, the semantics are now identical to an OutputStream (it goes forward only, only one thread can write). So after you have written everything, the file pointer is just pointing after the last byte, which is the number of bytes written. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
