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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| # | ||
| # 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. | ||
| # | ||
|
|
||
| # Set everything to be logged to the file streaming/target/unit-tests.log | ||
| log4j.rootCategory=INFO, file | ||
| # log4j.appender.file=org.apache.log4j.FileAppender | ||
| log4j.appender.file=org.apache.log4j.FileAppender | ||
| log4j.appender.file.append=false | ||
| log4j.appender.file.file=target/unit-tests.log | ||
| log4j.appender.file.layout=org.apache.log4j.PatternLayout | ||
| log4j.appender.file.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss.SSS} %t %p %c{1}: %m%n | ||
|
|
||
| # Ignore messages below warning level from Jetty, because it's a bit verbose | ||
| log4j.logger.org.eclipse.jetty=WARN | ||
|
|
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111 changes: 111 additions & 0 deletions
111
network/common/src/main/java/org/apache/spark/network/buffer/LazyFileRegion.java
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * 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.buffer; | ||
|
|
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| import java.io.FileInputStream; | ||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.nio.channels.FileChannel; | ||
| import java.nio.channels.WritableByteChannel; | ||
|
|
||
| import com.google.common.base.Objects; | ||
| import io.netty.channel.FileRegion; | ||
| import io.netty.util.AbstractReferenceCounted; | ||
|
|
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| import org.apache.spark.network.util.JavaUtils; | ||
|
|
||
| /** | ||
| * A FileRegion implementation that only creates the file descriptor when the region is being | ||
| * transferred. This cannot be used with Epoll because there is no native support for it. | ||
| * | ||
| * This is mostly copied from DefaultFileRegion implementation in Netty. In the future, we | ||
| * should push this into Netty so the native Epoll transport can support this feature. | ||
| */ | ||
| public final class LazyFileRegion extends AbstractReferenceCounted implements FileRegion { | ||
|
|
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| private final File file; | ||
| private final long position; | ||
| private final long count; | ||
|
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| private FileChannel channel; | ||
|
|
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| private long numBytesTransferred = 0L; | ||
|
|
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| /** | ||
| * @param file file to transfer. | ||
| * @param position start position for the transfer. | ||
| * @param count number of bytes to transfer starting from position. | ||
| */ | ||
| public LazyFileRegion(File file, long position, long count) { | ||
| this.file = file; | ||
| this.position = position; | ||
| this.count = count; | ||
| } | ||
|
|
||
| @Override | ||
| protected void deallocate() { | ||
| JavaUtils.closeQuietly(channel); | ||
| } | ||
|
|
||
| @Override | ||
| public long position() { | ||
| return position; | ||
| } | ||
|
|
||
| @Override | ||
| public long transfered() { | ||
| return numBytesTransferred; | ||
| } | ||
|
|
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| @Override | ||
| public long count() { | ||
| return count; | ||
| } | ||
|
|
||
| @Override | ||
| public long transferTo(WritableByteChannel target, long position) throws IOException { | ||
| if (channel == null) { | ||
| channel = new FileInputStream(file).getChannel(); | ||
| } | ||
|
|
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| long count = this.count - position; | ||
| if (count < 0 || position < 0) { | ||
| throw new IllegalArgumentException( | ||
| "position out of range: " + position + " (expected: 0 - " + (count - 1) + ')'); | ||
| } | ||
|
|
||
| if (count == 0) { | ||
| return 0L; | ||
| } | ||
|
|
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| long written = channel.transferTo(this.position + position, count, target); | ||
| if (written > 0) { | ||
| numBytesTransferred += written; | ||
| } | ||
| return written; | ||
| } | ||
|
|
||
| @Override | ||
| public String toString() { | ||
| return Objects.toStringHelper(this) | ||
| .add("file", file) | ||
| .add("position", position) | ||
| .add("count", count) | ||
| .toString(); | ||
| } | ||
| } |
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