示例#1
0
 @Override
 public Value lazyArrayChunk(final Key key) {
   final Key arykey = ValueArray.getArrayKey(key); // From the base file key
   final long off = (_iceRoot != null) ? 0 : ValueArray.getChunkOffset(key); // The offset
   final Path p =
       (_iceRoot != null)
           ? new Path(_iceRoot, getIceName(key, (byte) 'V'))
           : new Path(arykey.toString());
   final Size sz = new Size();
   run(
       new Callable() {
         @Override
         public Object call() throws Exception {
           FileSystem fs = FileSystem.get(p.toUri(), CONF);
           long rem = fs.getFileStatus(p).getLen() - off;
           sz._value = (rem > ValueArray.CHUNK_SZ * 2) ? (int) ValueArray.CHUNK_SZ : (int) rem;
           return null;
         }
       },
       true,
       0);
   Value val = new Value(key, sz._value, Value.HDFS);
   val.setdsk(); // But its already on disk.
   return val;
 }
示例#2
0
 private static void addFolder(FileSystem fs, Path p, JsonArray succeeded, JsonArray failed) {
   try {
     if (fs == null) return;
     for (FileStatus file : fs.listStatus(p)) {
       Path pfs = file.getPath();
       if (file.isDir()) {
         addFolder(fs, pfs, succeeded, failed);
       } else {
         Key k = Key.make(pfs.toString());
         long size = file.getLen();
         Value val = null;
         if (pfs.getName().endsWith(Extensions.JSON)) {
           JsonParser parser = new JsonParser();
           JsonObject json = parser.parse(new InputStreamReader(fs.open(pfs))).getAsJsonObject();
           JsonElement v = json.get(Constants.VERSION);
           if (v == null) throw new RuntimeException("Missing version");
           JsonElement type = json.get(Constants.TYPE);
           if (type == null) throw new RuntimeException("Missing type");
           Class c = Class.forName(type.getAsString());
           OldModel model = (OldModel) c.newInstance();
           model.fromJson(json);
         } else if (pfs.getName().endsWith(Extensions.HEX)) { // Hex file?
           FSDataInputStream s = fs.open(pfs);
           int sz = (int) Math.min(1L << 20, size); // Read up to the 1st meg
           byte[] mem = MemoryManager.malloc1(sz);
           s.readFully(mem);
           // Convert to a ValueArray (hope it fits in 1Meg!)
           ValueArray ary = new ValueArray(k, 0).read(new AutoBuffer(mem));
           val = new Value(k, ary, Value.HDFS);
         } else if (size >= 2 * ValueArray.CHUNK_SZ) {
           val =
               new Value(
                   k,
                   new ValueArray(k, size),
                   Value.HDFS); // ValueArray byte wrapper over a large file
         } else {
           val = new Value(k, (int) size, Value.HDFS); // Plain Value
           val.setdsk();
         }
         DKV.put(k, val);
         Log.info("PersistHdfs: DKV.put(" + k + ")");
         JsonObject o = new JsonObject();
         o.addProperty(Constants.KEY, k.toString());
         o.addProperty(Constants.FILE, pfs.toString());
         o.addProperty(Constants.VALUE_SIZE, file.getLen());
         succeeded.add(o);
       }
     }
   } catch (Exception e) {
     Log.err(e);
     JsonObject o = new JsonObject();
     o.addProperty(Constants.FILE, p.toString());
     o.addProperty(Constants.ERROR, e.getMessage());
     failed.add(o);
   }
 }
示例#3
0
 @Override
 public void store(Value v) {
   // Should be used only if ice goes to HDFS
   assert this == getIce();
   assert !v.isPersisted();
   byte[] m = v.memOrLoad();
   assert (m == null || m.length == v._max); // Assert not saving partial files
   store(new Path(_iceRoot, getIceName(v)), m);
   v.setdsk(); // Set as write-complete to disk
 }
示例#4
0
 @Override
 public void delete(final Value v) {
   assert this == getIce();
   assert !v.isPersisted(); // Upper layers already cleared out
   run(
       new Callable() {
         @Override
         public Object call() throws Exception {
           Path p = new Path(_iceRoot, getIceName(v));
           FileSystem fs = FileSystem.get(p.toUri(), CONF);
           fs.delete(p, true);
           if (v.isArray()) { // Also nuke directory if the top-level ValueArray dies
             p = new Path(_iceRoot, getIceDirectory(v._key));
             fs = FileSystem.get(p.toUri(), CONF);
             fs.delete(p, true);
           }
           return null;
         }
       },
       false,
       0);
 }