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HDFS-3754. BlockSender doesn't shutdown ReadaheadPool threads. Contributed by Eli Collins

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1370495 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Eli Collins 2012-08-07 20:17:59 +00:00
parent 754fd7b2fb
commit c12e994eda
3 changed files with 10 additions and 6 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -564,6 +564,8 @@ Branch-2 ( Unreleased changes )
HDFS-3579. libhdfs: fix exception handling. (Colin Patrick McCabe via atm)
HDFS-3754. BlockSender doesn't shutdown ReadaheadPool threads. (eli)
BREAKDOWN OF HDFS-3042 SUBTASKS
HDFS-2185. HDFS portion of ZK-based FailoverController (todd)

8
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
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@ -20,7 +20,6 @@
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.EOFException;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
@ -38,7 +37,6 @@
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.protocol.datatransfer.PacketHeader;
import org.apache.hadoop.hdfs.server.common.Util;
import org.apache.hadoop.hdfs.util.DataTransferThrottler;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.LongWritable;
@ -163,8 +161,6 @@ class BlockSender implements java.io.Closeable {
*/
private static final long LONG_READ_THRESHOLD_BYTES = 256 * 1024;
private static ReadaheadPool readaheadPool =
ReadaheadPool.getInstance();
/**
* Constructor
@ -691,8 +687,8 @@ private void manageOsCache() throws IOException {
}
// Perform readahead if necessary
if (readaheadLength > 0 && readaheadPool != null) {
curReadahead = readaheadPool.readaheadStream(
if (readaheadLength > 0 && datanode.readaheadPool != null) {
curReadahead = datanode.readaheadPool.readaheadStream(
clientTraceFmt, blockInFd,
offset, readaheadLength, Long.MAX_VALUE,
curReadahead);

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
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@ -144,6 +144,7 @@
import org.apache.hadoop.hdfs.web.resources.Param;
import org.apache.hadoop.http.HttpServer;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.ReadaheadPool;
import org.apache.hadoop.ipc.ProtobufRpcEngine;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.ipc.RemoteException;
@ -275,6 +276,7 @@ public static InetSocketAddress createSocketAddr(String target) {
private Configuration conf;
private final String userWithLocalPathAccess;
ReadaheadPool readaheadPool;
/**
* Create the DataNode given a configuration and an array of dataDirs.
@ -669,6 +671,10 @@ void startDataNode(Configuration conf,
blockPoolManager = new BlockPoolManager(this);
blockPoolManager.refreshNamenodes(conf);
// Create the ReadaheadPool from the DataNode context so we can
// exit without having to explicitly shutdown its thread pool.
readaheadPool = ReadaheadPool.getInstance();
}
/**