HDFS-14296. Prefer ArrayList over LinkedList in VolumeScanner. Contributed by BELUGA BEHR.
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@ -21,9 +21,9 @@ package org.apache.hadoop.hdfs.server.datanode;
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import java.io.DataOutputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.LinkedHashSet;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.concurrent.TimeUnit;
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@ -125,7 +125,7 @@ public class VolumeScanner extends Thread {
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* Each block pool has its own BlockIterator.
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*/
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private final List<BlockIterator> blockIters =
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new LinkedList<BlockIterator>();
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new ArrayList<BlockIterator>();
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/**
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* Blocks which are suspect.
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