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HDFS-4992. Make balancer's mover thread count and dispatcher thread count configurable. Contributed by Max Lapan 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1503720 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tsz-wo Sze 2013-07-16 14:04:33 +00:00
parent afaec5f52d
commit 2d6049f1d6
3 changed files with 17 additions and 7 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -443,6 +443,9 @@ Release 2.1.0-beta - 2013-07-02
HDFS-4903. Print trash configuration and trash emptier state in
namenode log. (Arpit Agarwal via suresh)
HDFS-4992. Make balancer's mover thread count and dispatcher thread count
configurable. (Max Lapan via szetszwo)
OPTIMIZATIONS
HDFS-4465. Optimize datanode ReplicasMap and ReplicaInfo. (atm)

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
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@ -276,6 +276,10 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
public static final boolean DFS_CLIENT_USE_LEGACY_BLOCKREADERLOCAL_DEFAULT = false;
public static final String DFS_BALANCER_MOVEDWINWIDTH_KEY = "dfs.balancer.movedWinWidth";
public static final long DFS_BALANCER_MOVEDWINWIDTH_DEFAULT = 5400*1000L;
public static final String DFS_BALANCER_MOVERTHREADS_KEY = "dfs.balancer.moverThreads";
public static final int DFS_BALANCER_MOVERTHREADS_DEFAULT = 1000;
public static final String DFS_BALANCER_DISPATCHERTHREADS_KEY = "dfs.balancer.dispatcherThreads";
public static final int DFS_BALANCER_DISPATCHERTHREADS_DEFAULT = 200;
public static final String DFS_DATANODE_ADDRESS_KEY = "dfs.datanode.address";
public static final int DFS_DATANODE_DEFAULT_PORT = 50010;
public static final String DFS_DATANODE_ADDRESS_DEFAULT = "0.0.0.0:" + DFS_DATANODE_DEFAULT_PORT;

17
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
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@ -226,13 +226,9 @@ public class Balancer {
= new HashMap<String, BalancerDatanode>();
private NetworkTopology cluster;
final static private int MOVER_THREAD_POOL_SIZE = 1000;
final private ExecutorService moverExecutor =
Executors.newFixedThreadPool(MOVER_THREAD_POOL_SIZE);
final static private int DISPATCHER_THREAD_POOL_SIZE = 200;
final private ExecutorService dispatcherExecutor =
Executors.newFixedThreadPool(DISPATCHER_THREAD_POOL_SIZE);
private final ExecutorService moverExecutor;
private final ExecutorService dispatcherExecutor;
/* This class keeps track of a scheduled block move */
private class PendingBlockMove {
@ -830,6 +826,13 @@ public class Balancer {
this.policy = p.policy;
this.nnc = theblockpool;
cluster = NetworkTopology.getInstance(conf);
this.moverExecutor = Executors.newFixedThreadPool(
conf.getInt(DFSConfigKeys.DFS_BALANCER_MOVERTHREADS_KEY,
DFSConfigKeys.DFS_BALANCER_MOVERTHREADS_DEFAULT));
this.dispatcherExecutor = Executors.newFixedThreadPool(
conf.getInt(DFSConfigKeys.DFS_BALANCER_DISPATCHERTHREADS_KEY,
DFSConfigKeys.DFS_BALANCER_DISPATCHERTHREADS_DEFAULT));
}
/* Shuffle datanode array */