Examples of org.apache.lucene.index.IndexWriter.commit()

Class org.apache.lucene.index.IndexWriter

Examples of org.apache.lucene.index.IndexWriter.commit()

org.apache.lucene.index.IndexWriter.commit()

Commits all pending changes (added & deleted documents, segment merges, added indexes, etc.) to the index, and syncs all referenced index files, such that a reader will see the changes and the index updates will survive an OS or machine crash or power loss. Note that this does not wait for any running background merges to finish. This may be a costly operation, so you should test the cost in your application and do it only when really necessary.

Note that this operation calls Directory.sync on the index files. That call should not return until the file contents & metadata are on stable storage. For FSDirectory, this calls the OS's fsync. But, beware: some hardware devices may in fact cache writes even during fsync, and return before the bits are actually on stable storage, to give the appearance of faster performance. If you have such a device, and it does not have a battery backup (for example) then on power loss it may still lose data. Lucene cannot guarantee consistency on such devices.

NOTE: if this method hits an OutOfMemoryError you should immediately close the writer. See above for details.
@see #prepareCommit @see #commit(Map)

         else {
            doc.add(new Field("secondaryField", term, Store.NO, Index.NOT_ANALYZED));
         }
         iwriter.addDocument(doc);
      }
      iwriter.commit();
      iwriter.close();
      return state;
   }


   @BeforeClass

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               else {
                  doc.add(new Field("secondaryField", term, Field.Store.YES, Field.Index.NOT_ANALYZED));
               }
               iwriter.addDocument(doc);
            }
            iwriter.commit();
         }
         finally {
            iwriter.close();
         }
      }

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    IndexWriter writer = null;
    try {
      accessor = synonym.getSynonymLocation().getAccessor();
      writer = accessor.getWriter();
      writer.deleteAll();
      writer.commit();      
      indexLocation.createReopenFile();
      synonym.getSynonymLocation().resetIndexJobCreationTimes();
    } catch (IOException e) {
      log.error("Could not clear extension-index", e);
    } finally {

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            Document doc = new Document();
            doc.add(new Field("Deskriptor", descriptorValue, Field.Store.YES, Field.Index.NOT_ANALYZED));
            doc.add(new Field("Synonym", synonymValue, Field.Store.YES, Field.Index.NOT_ANALYZED));
            synonymWriter.addDocument(doc);
            log.debug("WRITE SYN " + objCount + " " + descriptorValue + " " + synonymValue);
            synonymWriter.commit();
            log.debug("Number of actual Synonym: " + synonymWriter.numDocs());
          }
        }
      } finally {
        // if documents where added to the index create a reopen file and

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    final IndexWriterConfig config = new IndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    final IndexWriter indexWriter = new IndexWriter(directory, config);
    for (int i = 0; i < AMOUNT_OF_SEGMENTS; i++) {
      List<Document> segmentDocs = createDocsForSegment(i);
      indexWriter.addDocuments(segmentDocs);
      indexWriter.commit();
    }
    indexReader = DirectoryReader.open(indexWriter, random().nextBoolean());
    indexWriter.close();
    indexSearcher = new IndexSearcher(indexReader);
    parentsFilter = new FixedBitSetCachingWrapperFilter(new QueryWrapperFilter(new WildcardQuery(new Term("parent", "*"))));

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    Directory dir = newDirectory();
    IndexWriterConfig iwconf = newIndexWriterConfig(TEST_VERSION_CURRENT,
        new MockAnalyzer(random())).setOpenMode(OpenMode.CREATE).setCodec(new MockCodec());
    IndexWriter writer = newWriter(dir, iwconf);
    addDocs(writer, 10);
    writer.commit();
    addDocs3(writer, 10);
    writer.commit();
    addDocs2(writer, 10);
    writer.commit();
    assertEquals(30, writer.maxDoc());

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        new MockAnalyzer(random())).setOpenMode(OpenMode.CREATE).setCodec(new MockCodec());
    IndexWriter writer = newWriter(dir, iwconf);
    addDocs(writer, 10);
    writer.commit();
    addDocs3(writer, 10);
    writer.commit();
    addDocs2(writer, 10);
    writer.commit();
    assertEquals(30, writer.maxDoc());
    _TestUtil.checkIndex(dir);
    writer.forceMerge(1);

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    addDocs(writer, 10);
    writer.commit();
    addDocs3(writer, 10);
    writer.commit();
    addDocs2(writer, 10);
    writer.commit();
    assertEquals(30, writer.maxDoc());
    _TestUtil.checkIndex(dir);
    writer.forceMerge(1);
    assertEquals(30, writer.maxDoc());
    writer.close();

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    iwconf.setMaxBufferedDocs(IndexWriterConfig.DISABLE_AUTO_FLUSH);
    //((LogMergePolicy) iwconf.getMergePolicy()).setMergeFactor(10);
    IndexWriter writer = newWriter(dir, iwconf);


    addDocs(writer, 10);
    writer.commit();
    assertQuery(new Term("content", "aaa"), dir, 10);
    if (VERBOSE) {
      System.out.println("TEST: addDocs3");
    }
    addDocs3(writer, 10);

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    assertQuery(new Term("content", "aaa"), dir, 10);
    if (VERBOSE) {
      System.out.println("TEST: addDocs3");
    }
    addDocs3(writer, 10);
    writer.commit();
    writer.close();


    assertQuery(new Term("content", "ccc"), dir, 10);
    assertQuery(new Term("content", "aaa"), dir, 10);
    Codec codec = iwconf.getCodec();

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