Package org.apache.hadoop.hdfs.server.namenode.LeaseManager

Examples of org.apache.hadoop.hdfs.server.namenode.LeaseManager.Lease

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   * @return the timestamp of the last renewal of the given lease,
   *   or -1 in the case that the lease doesn't exist.
   */
  public static long getLeaseRenewalTime(NameNode nn, String path) {
    LeaseManager lm = nn.getNamesystem().leaseManager;
    Lease l = lm.getLeaseByPath(path);
    if (l == null) {
      return -1;
    }
    return l.getLastUpdate();
  }
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        INodeFileUnderConstruction pendingFile = (INodeFileUnderConstruction) myFile;
        //
        // If the file is under construction , then it must be in our
        // leases. Find the appropriate lease record.
        //
        Lease lease = leaseManager.getLease(new StringBytesWritable(holder));
        //
        // We found the lease for this file. And surprisingly the original
        // holder is trying to recreate this file. This should never occur.
        //
        if (lease != null) {
          throw new AlreadyBeingCreatedException(
                                                 "failed to create file " + src + " for " + holder +
                                                 " on client " + clientMachine +
                                                 " because current leaseholder is trying to recreate file.");
        }
        //
        // Find the original holder.
        //
        lease = leaseManager.getLease(pendingFile.clientName);
        if (lease == null) {
          throw new AlreadyBeingCreatedException(
                                                 "failed to create file " + src + " for " + holder +
                                                 " on client " + clientMachine +
                                                 " because pendingCreates is non-null but no leases found.");
        }
        //
        // If the original holder has not renewed in the last SOFTLIMIT
        // period, then start lease recovery.
        //
        if (lease.expiredSoftLimit()) {
          LOG.info("startFile: recover lease " + lease + ", src=" + src);
          internalReleaseLease(lease, src);
        }
        throw new AlreadyBeingCreatedException("failed to create file " + src + " for " + holder +
                                               " on client " + clientMachine +
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  private void checkLease(String src, String holder, INode file)
                                                     throws IOException {

    if (file == null || file.isDirectory()) {
      Lease lease = leaseManager.getLease(new StringBytesWritable(holder));
      throw new LeaseExpiredException("No lease on " + src +
                                      " File does not exist. " +
                                      (lease != null ? lease.toString() :
                                       "Holder " + holder +
                                       " does not have any open files."));
    }
    if (!file.isUnderConstruction()) {
      Lease lease = leaseManager.getLease(new StringBytesWritable(holder));
      throw new LeaseExpiredException("No lease on " + src +
                                      " File is not open for writing. " +
                                      (lease != null ? lease.toString() :
                                       "Holder " + holder +
                                       " does not have any open files."));
    }
    INodeFileUnderConstruction pendingFile = (INodeFileUnderConstruction)file;
    if (holder != null && !pendingFile.getClientName().equals(holder)) {
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        INodeFileUnderConstruction pendingFile = (INodeFileUnderConstruction) myFile;
        //
        // If the file is under construction , then it must be in our
        // leases. Find the appropriate lease record.
        //
        Lease lease = leaseManager.getLease(holder);
        //
        // We found the lease for this file. And surprisingly the original
        // holder is trying to recreate this file. This should never occur.
        //
        if (lease != null) {
          throw new AlreadyBeingCreatedException(
                                                 "failed to create file " + src + " for " + holder +
                                                 " on client " + clientMachine +
                                                 " because current leaseholder is trying to recreate file.");
        }
        //
        // Find the original holder.
        //
        lease = leaseManager.getLease(pendingFile.clientName);
        if (lease == null) {
          throw new AlreadyBeingCreatedException(
                                                 "failed to create file " + src + " for " + holder +
                                                 " on client " + clientMachine +
                                                 " because pendingCreates is non-null but no leases found.");
        }
        //
        // If the original holder has not renewed in the last SOFTLIMIT
        // period, then start lease recovery.
        //
        if (lease.expiredSoftLimit()) {
          LOG.info("startFile: recover lease " + lease + ", src=" + src);
          internalReleaseLease(lease, src);
        }
        throw new AlreadyBeingCreatedException("failed to create file " + src + " for " + holder +
                                               " on client " + clientMachine +
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  private void checkLease(String src, String holder, INode file)
                                                     throws IOException {

    if (file == null || file.isDirectory()) {
      Lease lease = leaseManager.getLease(holder);
      throw new LeaseExpiredException("No lease on " + src +
                                      " File does not exist. " +
                                      (lease != null ? lease.toString() :
                                       "Holder " + holder +
                                       " does not have any open files."));
    }
    if (!file.isUnderConstruction()) {
      Lease lease = leaseManager.getLease(holder);
      throw new LeaseExpiredException("No lease on " + src +
                                      " File is not open for writing. " +
                                      (lease != null ? lease.toString() :
                                       "Holder " + holder +
                                       " does not have any open files."));
    }
    INodeFileUnderConstruction pendingFile = (INodeFileUnderConstruction)file;
    if (holder != null && !pendingFile.getClientName().equals(holder)) {
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        INodeFileUnderConstruction pendingFile = (INodeFileUnderConstruction) myFile;
        //
        // If the file is under construction , then it must be in our
        // leases. Find the appropriate lease record.
        //
        Lease lease = leaseManager.getLeaseByPath(src);
        if (lease == null) {
          throw new AlreadyBeingCreatedException(
              "failed to create file " + src + " for " + holder +
              " on client " + clientMachine +
              " because pendingCreates is non-null but no leases found.");
        }
        //
        // We found the lease for this file. And surprisingly the original
        // holder is trying to recreate this file. This should never occur.
        //
        if (lease.getHolder().equals(holder)) {
          throw new AlreadyBeingCreatedException(
              "failed to create file " + src + " for " + holder +
              " on client " + clientMachine +
              " because current leaseholder is trying to recreate file.");
        }
        assert lease.getHolder().equals(pendingFile.getClientName()) :
            "Current lease holder " + lease.getHolder() +
            " does not match file creator " + pendingFile.getClientName();
        //
        // Current lease holder is different from the requester.
        // If the original holder has not renewed in the last SOFTLIMIT
        // period, then start lease recovery.
        //
        if (lease.expiredSoftLimit()) {
          LOG.info("startFile: recover lease " + lease + ", src=" + src);
          internalReleaseLease(lease, src);
        }
        throw new AlreadyBeingCreatedException("failed to create file " + src + " for " + holder +
                                               " on client " + clientMachine +
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  private void checkLease(String src, String holder, INode file)
                                                     throws IOException {

    if (file == null || file.isDirectory()) {
      Lease lease = leaseManager.getLease(holder);
      throw new LeaseExpiredException("No lease on " + src +
                                      " File does not exist. " +
                                      (lease != null ? lease.toString() :
                                       "Holder " + holder +
                                       " does not have any open files."));
    }
    if (!file.isUnderConstruction()) {
      Lease lease = leaseManager.getLease(holder);
      throw new LeaseExpiredException("No lease on " + src +
                                      " File is not open for writing. " +
                                      (lease != null ? lease.toString() :
                                       "Holder " + holder +
                                       " does not have any open files."));
    }
    INodeFileUnderConstruction pendingFile = (INodeFileUnderConstruction)file;
    if (holder != null && !pendingFile.getClientName().equals(holder)) {
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      INodeFileUnderConstruction pendingFile = (INodeFileUnderConstruction) fileInode;
      //
      // If the file is under construction , then it must be in our
      // leases. Find the appropriate lease record.
      //
      Lease lease = leaseManager.getLease(holder);
      //
      // We found the lease for this file. And surprisingly the original
      // holder is trying to recreate this file. This should never occur.
      //
      if (!force && lease != null) {
        Lease leaseFile = leaseManager.getLeaseByPath(src);
        if (leaseFile != null && leaseFile.equals(lease)) {
          throw new AlreadyBeingCreatedException(
                    "failed to create file " + src + " for " + holder +
                    " on client " + clientMachine +
                    " because current leaseholder is trying to recreate file.");
        }
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  private void checkLease(String src, String holder, INode file)
                                                     throws IOException {

    if (file == null || file.isDirectory()) {
      Lease lease = leaseManager.getLease(holder);
      throw new LeaseExpiredException("No lease on " + src +
                                      " File does not exist. " +
                                      (lease != null ? lease.toString() :
                                       "Holder " + holder +
                                       " does not have any open files."));
    }
    if (!file.isUnderConstruction()) {
      Lease lease = leaseManager.getLease(holder);
      throw new LeaseExpiredException("No lease on " + src +
                                      " File is not open for writing. " +
                                      (lease != null ? lease.toString() :
                                       "Holder " + holder +
                                       " does not have any open files."));
    }
    INodeFileUnderConstruction pendingFile = (INodeFileUnderConstruction)file;
    if (holder != null && !pendingFile.getClientName().equals(holder)) {
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      }
      pendingFile.setTargets(targets);
    }
    // start lease recovery of the last block for this file.
    pendingFile.assignPrimaryDatanode();
    Lease reassignedLease = reassignLease(
      lease, src, HdfsConstants.NN_RECOVERY_LEASEHOLDER, pendingFile);
    leaseManager.renewLease(reassignedLease);
  }
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  • org.apache.hadoop.hdfs.server.namenode.FSNamesystem
  • org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter
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