Examples of org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor

Package org.apache.hadoop.hdfs.server.blockmanagement

Examples of org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor

org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor
Scans the namesystem, scheduling blocks to be cached as appropriate. The CacheReplicationMonitor does a full scan when the NameNode first starts up, and at configurable intervals afterwards.


  public void startMonitorThread() {
    crmLock.lock();
    try {
      if (this.monitor == null) {
        this.monitor = new CacheReplicationMonitor(namesystem, this,
            scanIntervalMs, crmLock);
        this.monitor.start();
      }
    } finally {
      crmLock.unlock();

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  public void stopMonitorThread() {
    crmLock.lock();
    try {
      if (this.monitor != null) {
        CacheReplicationMonitor prevMonitor = this.monitor;
        this.monitor = null;
        IOUtils.closeQuietly(prevMonitor);
      }
    } finally {
      crmLock.unlock();

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  public void startMonitorThread() {
    crmLock.lock();
    try {
      if (this.monitor == null) {
        this.monitor = new CacheReplicationMonitor(namesystem, this,
            scanIntervalMs, crmLock);
        this.monitor.start();
      }
    } finally {
      crmLock.unlock();

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  public void stopMonitorThread() {
    crmLock.lock();
    try {
      if (this.monitor != null) {
        CacheReplicationMonitor prevMonitor = this.monitor;
        this.monitor = null;
        IOUtils.closeQuietly(prevMonitor);
      }
    } finally {
      crmLock.unlock();

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  public void startMonitorThread() {
    crmLock.lock();
    try {
      if (this.monitor == null) {
        this.monitor = new CacheReplicationMonitor(namesystem, this,
            scanIntervalMs, crmLock);
        this.monitor.start();
      }
    } finally {
      crmLock.unlock();

View Full Code Here


  public void stopMonitorThread() {
    crmLock.lock();
    try {
      if (this.monitor != null) {
        CacheReplicationMonitor prevMonitor = this.monitor;
        this.monitor = null;
        IOUtils.closeQuietly(prevMonitor);
      }
    } finally {
      crmLock.unlock();

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Related Classes of org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor

org.apache.hadoop.hdfs.protocol.Block

org.apache.hadoop.hdfs.server.namenode.CachedBlock

org.apache.hadoop.hdfs.server.namenode.CacheManager

org.apache.hadoop.hdfs.server.namenode.CachePool

org.apache.hadoop.hdfs.server.namenode.FSDirectory

org.apache.hadoop.hdfs.server.namenode.INode

org.apache.hadoop.hdfs.server.namenode.INodeDirectory

java.util.Date

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