public void testSizeInBytesCache() throws Exception {
    Directory dir = newDirectory();
    IndexWriterConfig conf =
        newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer())
            .setMergePolicy(newLogMergePolicy());
    IndexWriter writer = new IndexWriter(dir, conf);
    writer.setInfoStream(VERBOSE ? System.out : null);
    Document doc = new Document();
    doc.add(new Field("a", "value", Store.YES, Index.ANALYZED));
    writer.addDocument(doc);
    writer.close();

    SegmentInfos sis = new SegmentInfos();
    sis.read(dir);
    SegmentInfo si = sis.info(0);
    long sizeInBytesNoStore = si.sizeInBytes(false);
    long sizeInBytesWithStore = si.sizeInBytes(true);
    assertTrue(
        "sizeInBytesNoStore="
            + sizeInBytesNoStore
            + " sizeInBytesWithStore="
            + sizeInBytesWithStore,
        sizeInBytesWithStore > sizeInBytesNoStore);
    dir.close();
  }
 public void listSegments() throws IOException {
   DecimalFormat formatter = new DecimalFormat("###,###.###");
   for (int x = 0; x < infos.size(); x++) {
     SegmentInfo info = infos.info(x);
     String sizeStr = formatter.format(info.sizeInBytes(true));
     System.out.println(info.name + " " + sizeStr);
   }
 }
Esempio n. 3
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  // Used by near real-time search
  DirectoryReader(
      IndexWriter writer, SegmentInfos infos, int termInfosIndexDivisor, boolean applyAllDeletes)
      throws IOException {
    this.directory = writer.getDirectory();
    this.readOnly = true;
    this.applyAllDeletes = applyAllDeletes; // saved for reopen

    this.termInfosIndexDivisor = termInfosIndexDivisor;
    readerFinishedListeners = writer.getReaderFinishedListeners();

    // IndexWriter synchronizes externally before calling
    // us, which ensures infos will not change; so there's
    // no need to process segments in reverse order
    final int numSegments = infos.size();

    List<SegmentReader> readers = new ArrayList<SegmentReader>();
    final Directory dir = writer.getDirectory();

    segmentInfos = (SegmentInfos) infos.clone();
    int infosUpto = 0;
    for (int i = 0; i < numSegments; i++) {
      boolean success = false;
      try {
        final SegmentInfo info = infos.info(i);
        assert info.dir == dir;
        final SegmentReader reader =
            writer.readerPool.getReadOnlyClone(info, true, termInfosIndexDivisor);
        if (reader.numDocs() > 0 || writer.getKeepFullyDeletedSegments()) {
          reader.readerFinishedListeners = readerFinishedListeners;
          readers.add(reader);
          infosUpto++;
        } else {
          reader.close();
          segmentInfos.remove(infosUpto);
        }
        success = true;
      } finally {
        if (!success) {
          // Close all readers we had opened:
          for (SegmentReader reader : readers) {
            try {
              reader.close();
            } catch (Throwable ignore) {
              // keep going - we want to clean up as much as possible
            }
          }
        }
      }
    }

    this.writer = writer;

    initialize(readers.toArray(new SegmentReader[readers.size()]));
  }
Esempio n. 4
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  /** Construct reading the named set of readers. */
  DirectoryReader(
      Directory directory,
      SegmentInfos sis,
      IndexDeletionPolicy deletionPolicy,
      boolean readOnly,
      int termInfosIndexDivisor,
      Collection<ReaderFinishedListener> readerFinishedListeners)
      throws IOException {
    this.directory = directory;
    this.readOnly = readOnly;
    this.segmentInfos = sis;
    this.deletionPolicy = deletionPolicy;
    this.termInfosIndexDivisor = termInfosIndexDivisor;

    if (readerFinishedListeners == null) {
      this.readerFinishedListeners =
          new MapBackedSet<ReaderFinishedListener>(
              new ConcurrentHashMap<ReaderFinishedListener, Boolean>());
    } else {
      this.readerFinishedListeners = readerFinishedListeners;
    }
    applyAllDeletes = false;

    // To reduce the chance of hitting FileNotFound
    // (and having to retry), we open segments in
    // reverse because IndexWriter merges & deletes
    // the newest segments first.

    SegmentReader[] readers = new SegmentReader[sis.size()];
    for (int i = sis.size() - 1; i >= 0; i--) {
      boolean success = false;
      try {
        readers[i] = SegmentReader.get(readOnly, sis.info(i), termInfosIndexDivisor);
        readers[i].readerFinishedListeners = this.readerFinishedListeners;
        success = true;
      } finally {
        if (!success) {
          // Close all readers we had opened:
          for (i++; i < sis.size(); i++) {
            try {
              readers[i].close();
            } catch (Throwable ignore) {
              // keep going - we want to clean up as much as possible
            }
          }
        }
      }
    }

    initialize(readers);
  }
Esempio n. 5
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  @Override
  public synchronized IndexReader reopen() throws CorruptIndexException, IOException {
    IndexReader newInner = null;

    SegmentInfos sinfos = new SegmentInfos();
    sinfos.read(_dir);
    int size = sinfos.size();

    if (in instanceof MultiReader) {
      // setup current reader list
      List<IndexReader> boboReaderList = new LinkedList<IndexReader>();
      ReaderUtil.gatherSubReaders((List<IndexReader>) boboReaderList, in);
      Map<String, BoboIndexReader> readerMap = new HashMap<String, BoboIndexReader>();
      for (IndexReader reader : boboReaderList) {
        BoboIndexReader boboReader = (BoboIndexReader) reader;
        SegmentReader sreader = (SegmentReader) (boboReader.in);
        readerMap.put(sreader.getSegmentName(), boboReader);
      }

      ArrayList<BoboIndexReader> currentReaders = new ArrayList<BoboIndexReader>(size);
      boolean isNewReader = false;
      for (int i = 0; i < size; ++i) {
        SegmentInfo sinfo = (SegmentInfo) sinfos.info(i);
        BoboIndexReader breader = readerMap.remove(sinfo.name);
        if (breader != null) {
          // should use SegmentReader.reopen
          // TODO: see LUCENE-2559
          BoboIndexReader newReader = (BoboIndexReader) breader.reopen(true);
          if (newReader != breader) {
            isNewReader = true;
          }
          if (newReader != null) {
            currentReaders.add(newReader);
          }
        } else {
          isNewReader = true;
          SegmentReader newSreader = SegmentReader.get(true, sinfo, 1);
          breader =
              BoboIndexReader.getInstanceAsSubReader(
                  newSreader, this._facetHandlers, this._runtimeFacetHandlerFactories);
          breader._dir = _dir;
          currentReaders.add(breader);
        }
      }
      isNewReader = isNewReader || (readerMap.size() != 0);
      if (!isNewReader) {
        return this;
      } else {
        MultiReader newMreader =
            new MultiReader(
                currentReaders.toArray(new BoboIndexReader[currentReaders.size()]), false);
        BoboIndexReader newReader =
            BoboIndexReader.getInstanceAsSubReader(
                newMreader, this._facetHandlers, this._runtimeFacetHandlerFactories);
        newReader._dir = _dir;
        return newReader;
      }
    } else if (in instanceof SegmentReader) {
      // should use SegmentReader.reopen
      // TODO: see LUCENE-2559

      SegmentReader sreader = (SegmentReader) in;
      int numDels = sreader.numDeletedDocs();

      SegmentInfo sinfo = null;
      boolean sameSeg = false;
      // get SegmentInfo instance
      for (int i = 0; i < size; ++i) {
        SegmentInfo sinfoTmp = (SegmentInfo) sinfos.info(i);
        if (sinfoTmp.name.equals(sreader.getSegmentName())) {
          int numDels2 = sinfoTmp.getDelCount();
          sameSeg = numDels == numDels2;
          sinfo = sinfoTmp;
          break;
        }
      }

      if (sinfo == null) {
        // segment no longer exists
        return null;
      }
      if (sameSeg) {
        return this;
      } else {
        SegmentReader newSreader = SegmentReader.get(true, sinfo, 1);
        return BoboIndexReader.getInstanceAsSubReader(
            newSreader, this._facetHandlers, this._runtimeFacetHandlerFactories);
      }
    } else {
      // should not reach here, a catch-all default case
      IndexReader reader = in.reopen(true);
      if (in != reader) {
        return BoboIndexReader.getInstance(
            newInner, _facetHandlers, _runtimeFacetHandlerFactories, _workArea);
      } else {
        return this;
      }
    }
  }
Esempio n. 6
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  /** This constructor is only used for {@link #doOpenIfChanged()} */
  DirectoryReader(
      Directory directory,
      SegmentInfos infos,
      SegmentReader[] oldReaders,
      int[] oldStarts,
      Map<String, byte[]> oldNormsCache,
      boolean readOnly,
      boolean doClone,
      int termInfosIndexDivisor,
      Collection<ReaderFinishedListener> readerFinishedListeners)
      throws IOException {
    this.directory = directory;
    this.readOnly = readOnly;
    this.segmentInfos = infos;
    this.termInfosIndexDivisor = termInfosIndexDivisor;
    assert readerFinishedListeners != null;
    this.readerFinishedListeners = readerFinishedListeners;
    applyAllDeletes = false;

    // we put the old SegmentReaders in a map, that allows us
    // to lookup a reader using its segment name
    Map<String, Integer> segmentReaders = new HashMap<String, Integer>();

    if (oldReaders != null) {
      // create a Map SegmentName->SegmentReader
      for (int i = 0; i < oldReaders.length; i++) {
        segmentReaders.put(oldReaders[i].getSegmentName(), Integer.valueOf(i));
      }
    }

    SegmentReader[] newReaders = new SegmentReader[infos.size()];

    // remember which readers are shared between the old and the re-opened
    // DirectoryReader - we have to incRef those readers
    boolean[] readerShared = new boolean[infos.size()];

    for (int i = infos.size() - 1; i >= 0; i--) {
      // find SegmentReader for this segment
      Integer oldReaderIndex = segmentReaders.get(infos.info(i).name);
      if (oldReaderIndex == null) {
        // this is a new segment, no old SegmentReader can be reused
        newReaders[i] = null;
      } else {
        // there is an old reader for this segment - we'll try to reopen it
        newReaders[i] = oldReaders[oldReaderIndex.intValue()];
      }

      boolean success = false;
      try {
        SegmentReader newReader;
        if (newReaders[i] == null
            || infos.info(i).getUseCompoundFile()
                != newReaders[i].getSegmentInfo().getUseCompoundFile()) {

          // We should never see a totally new segment during cloning
          assert !doClone;

          // this is a new reader; in case we hit an exception we can close it safely
          newReader = SegmentReader.get(readOnly, infos.info(i), termInfosIndexDivisor);
          newReader.readerFinishedListeners = readerFinishedListeners;
          readerShared[i] = false;
          newReaders[i] = newReader;
        } else {
          newReader = newReaders[i].reopenSegment(infos.info(i), doClone, readOnly);
          if (newReader == null) {
            // this reader will be shared between the old and the new one,
            // so we must incRef it
            readerShared[i] = true;
            newReaders[i].incRef();
          } else {
            assert newReader.readerFinishedListeners == readerFinishedListeners;
            readerShared[i] = false;
            // Steal ref returned to us by reopenSegment:
            newReaders[i] = newReader;
          }
        }
        success = true;
      } finally {
        if (!success) {
          for (i++; i < infos.size(); i++) {
            if (newReaders[i] != null) {
              try {
                if (!readerShared[i]) {
                  // this is a new subReader that is not used by the old one,
                  // we can close it
                  newReaders[i].close();
                } else {
                  // this subReader is also used by the old reader, so instead
                  // closing we must decRef it
                  newReaders[i].decRef();
                }
              } catch (IOException ignore) {
                // keep going - we want to clean up as much as possible
              }
            }
          }
        }
      }
    }

    // initialize the readers to calculate maxDoc before we try to reuse the old normsCache
    initialize(newReaders);

    // try to copy unchanged norms from the old normsCache to the new one
    if (oldNormsCache != null) {
      for (Map.Entry<String, byte[]> entry : oldNormsCache.entrySet()) {
        String field = entry.getKey();
        if (!hasNorms(field)) {
          continue;
        }

        byte[] oldBytes = entry.getValue();

        byte[] bytes = new byte[maxDoc()];

        for (int i = 0; i < subReaders.length; i++) {
          Integer oldReaderIndex = segmentReaders.get(subReaders[i].getSegmentName());

          // this SegmentReader was not re-opened, we can copy all of its norms
          if (oldReaderIndex != null
              && (oldReaders[oldReaderIndex.intValue()] == subReaders[i]
                  || oldReaders[oldReaderIndex.intValue()].norms.get(field)
                      == subReaders[i].norms.get(field))) {
            // we don't have to synchronize here: either this constructor is called from a
            // SegmentReader,
            // in which case no old norms cache is present, or it is called from
            // MultiReader.reopen(),
            // which is synchronized
            System.arraycopy(
                oldBytes,
                oldStarts[oldReaderIndex.intValue()],
                bytes,
                starts[i],
                starts[i + 1] - starts[i]);
          } else {
            subReaders[i].norms(field, bytes, starts[i]);
          }
        }

        normsCache.put(field, bytes); // update cache
      }
    }
  }
 private int getIdx(String name) {
   for (int x = 0; x < infos.size(); x++) {
     if (name.equals(infos.info(x).name)) return x;
   }
   return -1;
 }
 private SegmentInfo getInfo(String name) {
   for (int x = 0; x < infos.size(); x++) {
     if (name.equals(infos.info(x).name)) return infos.info(x);
   }
   return null;
 }