Package org.apache.hadoop.io

Examples of org.apache.hadoop.io.ArrayWritable

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  void logCreateFile( FSDirectory.INode newNode ) {
    UTF8 nameReplicationPair[] = new UTF8[] {
                        new UTF8( newNode.computeName() ),
                        FSEditLog.toLogReplication( newNode.getReplication() )};
    logEdit(OP_ADD,
            new ArrayWritable( UTF8.class, nameReplicationPair ),
            new ArrayWritable( Block.class, newNode.getBlocks() ));
  }
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      FSImageSerialization.writeString(path, out);
      FSImageSerialization.writeShort(replication, out);
      FSImageSerialization.writeLong(mtime, out);
      FSImageSerialization.writeLong(atime, out);
      FSImageSerialization.writeLong(blockSize, out);
      new ArrayWritable(Block.class, blocks).write(out);
      permissions.write(out);

      if (this.opCode == OP_ADD) {
        FSImageSerialization.writeString(clientName,out);
        FSImageSerialization.writeString(clientMachine,out);
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      DeprecatedUTF8 info[] = new DeprecatedUTF8[srcs.length];
      int idx = 0;
      for(int i=0; i<srcs.length; i++) {
        info[idx++] = new DeprecatedUTF8(srcs[i]);
      }
      new ArrayWritable(DeprecatedUTF8.class, info).write(out);

      FSImageSerialization.writeLong(timestamp, out);
     
      // rpc ids
      writeRpcIds(rpcClientId, rpcCallId, out);
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          }
          numEdits++;
          switch (opcode) {
          case OP_ADD: {
            UTF8 name = new UTF8();
            ArrayWritable aw = null;
            Writable writables[];
            // version 0 does not support per file replication
            if (logVersion >= 0)
              name.readFields(in);  // read name only
            else {  // other versions do
              // get name and replication
              aw = new ArrayWritable(UTF8.class);
              aw.readFields(in);
              writables = aw.get();
              if (logVersion >= -4 && writables.length != 2 ||
                  logVersion < -4 && writables.length != 3) {
                  throw new IOException("Incorrect data fortmat. "
                                        + "Name & replication pair expected");
              }
              name = (UTF8) writables[0];
              replication = Short.parseShort(
                                             ((UTF8)writables[1]).toString());
              replication = adjustReplication(replication);
              if (logVersion < -4) {
                mtime = Long.parseLong(((UTF8)writables[2]).toString());
              }
            }
            // get blocks
            aw = new ArrayWritable(Block.class);
            aw.readFields(in);
            writables = aw.get();
            Block blocks[] = new Block[writables.length];
            System.arraycopy(writables, 0, blocks, 0, blocks.length);
            // add to the file tree
            fsDir.unprotectedAddFile(name.toString(), blocks, replication, mtime);
            break;
          }
          case OP_SET_REPLICATION: {
            UTF8 src = new UTF8();
            UTF8 repl = new UTF8();
            src.readFields(in);
            repl.readFields(in);
            replication = adjustReplication(fromLogReplication(repl));
            fsDir.unprotectedSetReplication(src.toString(),
                                            replication,
                                            null);
            break;
          }
          case OP_RENAME: {
            UTF8 src = null;
            UTF8 dst = null;
            if (logVersion >= -4) {
              src = new UTF8();
              dst = new UTF8();
              src.readFields(in);
              dst.readFields(in);
            } else {
              ArrayWritable aw = null;
              Writable writables[];
              aw = new ArrayWritable(UTF8.class);
              aw.readFields(in);
              writables = aw.get();
              if (writables.length != 3) {
                throw new IOException("Incorrect data fortmat. "
                                      + "Mkdir operation.");
              }
              src = (UTF8) writables[0];
              dst = (UTF8) writables[1];
              timestamp = Long.parseLong(((UTF8)writables[2]).toString());
            }
            fsDir.unprotectedRenameTo(src.toString(), dst.toString(), timestamp);
            break;
          }
          case OP_DELETE: {
            UTF8 src = null;
            if (logVersion >= -4) {
              src = new UTF8();
              src.readFields(in);
            } else {
              ArrayWritable aw = null;
              Writable writables[];
              aw = new ArrayWritable(UTF8.class);
              aw.readFields(in);
              writables = aw.get();
              if (writables.length != 2) {
                throw new IOException("Incorrect data fortmat. "
                                      + "delete operation.");
              }
              src = (UTF8) writables[0];
              timestamp = Long.parseLong(((UTF8)writables[1]).toString());
            }
            fsDir.unprotectedDelete(src.toString(), timestamp);
            break;
          }
          case OP_MKDIR: {
            UTF8 src = null;
            if (logVersion >= -4) {
              src = new UTF8();
              src.readFields(in);
            } else {
              ArrayWritable aw = null;
              Writable writables[];
              aw = new ArrayWritable(UTF8.class);
              aw.readFields(in);
              writables = aw.get();
              if (writables.length != 2) {
                throw new IOException("Incorrect data fortmat. "
                                      + "Mkdir operation.");
              }
              src = (UTF8) writables[0];
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    UTF8 nameReplicationPair[] = new UTF8[] {
      new UTF8(newNode.getAbsoluteName()),
      FSEditLog.toLogReplication(newNode.getReplication()),
      FSEditLog.toLogTimeStamp(newNode.getModificationTime())};
    logEdit(OP_ADD,
            new ArrayWritable(UTF8.class, nameReplicationPair),
            new ArrayWritable(Block.class, newNode.getBlocks()));
  }
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  void logMkDir(FSDirectory.INode newNode) {
    UTF8 info[] = new UTF8[] {
      new UTF8(newNode.getAbsoluteName()),
      FSEditLog.toLogTimeStamp(newNode.getModificationTime())
    };
    logEdit(OP_MKDIR, new ArrayWritable(UTF8.class, info), null);
  }
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  void logRename(String src, String dst, long timestamp) {
    UTF8 info[] = new UTF8[] {
      new UTF8(src),
      new UTF8(dst),
      FSEditLog.toLogTimeStamp(timestamp)};
    logEdit(OP_RENAME, new ArrayWritable(UTF8.class, info), null);
  }
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   */
  void logDelete(String src, long timestamp) {
    UTF8 info[] = new UTF8[] {
      new UTF8(src),
      FSEditLog.toLogTimeStamp(timestamp)};
    logEdit(OP_DELETE, new ArrayWritable(UTF8.class, info), null);
  }
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      FSEditLog.toLogReplication(newNode.getReplication()),
      FSEditLog.toLogLong(newNode.getModificationTime()),
      FSEditLog.toLogLong(newNode.getAccessTime()),
      FSEditLog.toLogLong(newNode.getPreferredBlockSize())};
    logEdit(OP_ADD,
            new ArrayWritable(UTF8.class, nameReplicationPair),
            new ArrayWritable(Block.class, newNode.getBlocks()),
            newNode.getPermissionStatus(),
            new UTF8(newNode.getClientName()),
            new UTF8(newNode.getClientMachine()));
  }
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      FSEditLog.toLogReplication(newNode.getReplication()),
      FSEditLog.toLogLong(newNode.getModificationTime()),
      FSEditLog.toLogLong(newNode.getAccessTime()),
      FSEditLog.toLogLong(newNode.getPreferredBlockSize())};
    logEdit(OP_CLOSE,
            new ArrayWritable(UTF8.class, nameReplicationPair),
            new ArrayWritable(Block.class, newNode.getBlocks()),
            newNode.getPermissionStatus());
  }
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