Package org.apache.accumulo.core.file

Examples of org.apache.accumulo.core.file.FileSKVWriter

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    String dir = "/tmp/bulk_test_diff_files_89723987592";
   
    fs.delete(new Path(dir), true);
   
    FileSKVWriter writer1 = FileOperations.getInstance().openWriter(dir + "/f1." + Constants.MAPFILE_EXTENSION, fs, conf,
        ServerConfiguration.getSystemConfiguration());
    writer1.startDefaultLocalityGroup();
    writeData(writer1, 0, 333);
    writer1.close();
   
    fs.rename(new Path(dir + "/f1." + Constants.MAPFILE_EXTENSION), new Path(dir + "/f1"));
   
    FileSKVWriter writer2 = FileOperations.getInstance().openWriter(dir + "/f2." + Constants.MAPFILE_EXTENSION, fs, conf,
        ServerConfiguration.getSystemConfiguration());
    writer2.startDefaultLocalityGroup();
    writeData(writer2, 334, 999);
    writer2.close();
   
    FileSKVWriter writer3 = FileOperations.getInstance().openWriter(dir + "/f3." + RFile.EXTENSION, fs, conf, ServerConfiguration.getSystemConfiguration());
    writer3.startDefaultLocalityGroup();
    writeData(writer3, 1000, 1999);
    writer3.close();
   
    bulkImport(fs, "bulkFile", dir);
   
    checkMapFiles("bulkFile", 6, 6, 1, 1);
   
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   * @deprecated since 1.4, MapFiles will no longer be written. Instead use {@link org.apache.accumulo.core.file.rfile.RFileOperations#openWriter}.
   * @see org.apache.hadoop.io.MapFile.Writer
   */
  public FileSKVWriter openWriter(final String file, final FileSystem fs, Configuration conf, AccumuloConfiguration acuconf) throws IOException {
    final MyMapFile.Writer mfw = MapFileUtil.openMapFileWriter(acuconf, conf, fs, file);
    return new FileSKVWriter() {
     
      boolean secondCall = false;
     
      @Override
      public void append(Key key, Value value) throws IOException {
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      extension = RFile.EXTENSION;
   
    handleBlockSize(job);
    final Path file = this.getDefaultWorkFile(job, "." + extension);
   
    final FileSKVWriter out = FileOperations.getInstance().openWriter(file.toString(), file.getFileSystem(conf), conf,
        AccumuloConfiguration.getDefaultConfiguration());
    out.startDefaultLocalityGroup();
   
    return new RecordWriter<Key,Value>() {
      private boolean hasData = false;
     
      @Override
      public void write(Key key, Value value) throws IOException {
        out.append(key, value);
        hasData = true;
      }
     
      @Override
      public void close(TaskAttemptContext context) throws IOException, InterruptedException {
        out.close();
        if (!hasData)
          file.getFileSystem(conf).delete(file, false);
      }
    };
  }
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    MockTabletLocator locator = new MockTabletLocator();
    FileSystem fs = FileSystem.getLocal(CachedConfiguration.getInstance());
    AccumuloConfiguration acuConf = AccumuloConfiguration.getDefaultConfiguration();
    String file = "target/testFile.rf";
    fs.delete(new Path(file), true);
    FileSKVWriter writer = FileOperations.getInstance().openWriter(file, fs, fs.getConf(), acuConf);
    writer.startDefaultLocalityGroup();
    Value empty = new Value(new byte[] {});
    writer.append(new Key("a", "cf", "cq"), empty);
    writer.append(new Key("a", "cf", "cq1"), empty);
    writer.append(new Key("a", "cf", "cq2"), empty);
    writer.append(new Key("a", "cf", "cq3"), empty);
    writer.append(new Key("a", "cf", "cq4"), empty);
    writer.append(new Key("a", "cf", "cq5"), empty);
    writer.append(new Key("d", "cf", "cq"), empty);
    writer.append(new Key("d", "cf", "cq1"), empty);
    writer.append(new Key("d", "cf", "cq2"), empty);
    writer.append(new Key("d", "cf", "cq3"), empty);
    writer.append(new Key("d", "cf", "cq4"), empty);
    writer.append(new Key("d", "cf", "cq5"), empty);
    writer.append(new Key("dd", "cf", "cq1"), empty);
    writer.append(new Key("ichabod", "cf", "cq"), empty);
    writer.append(new Key("icky", "cf", "cq1"), empty);
    writer.append(new Key("iffy", "cf", "cq2"), empty);
    writer.append(new Key("internal", "cf", "cq3"), empty);
    writer.append(new Key("is", "cf", "cq4"), empty);
    writer.append(new Key("iterator", "cf", "cq5"), empty);
    writer.append(new Key("xyzzy", "cf", "cq"), empty);
    writer.close();
    List<TabletLocation> overlaps = BulkImporter.findOverlappingTablets(acuConf, fs, locator, new Path(file));
    Assert.assertEquals(5, overlaps.size());
    Collections.sort(overlaps);
    Assert.assertEquals(new KeyExtent(tableId, new Text("a"), null), overlaps.get(0).tablet_extent);
    Assert.assertEquals(new KeyExtent(tableId, new Text("d"), new Text("cm")), overlaps.get(1).tablet_extent);
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    String even = new File(importDir, "even.rf").toString();
    String odd = new File(importDir, "odd.rf").toString();
    File errorsDir = folder.newFolder("errors");
    fs.mkdirs(new Path(errorsDir.toString()));
    AccumuloConfiguration aconf = AccumuloConfiguration.getDefaultConfiguration();
    FileSKVWriter evenWriter = FileOperations.getInstance().openWriter(even, fs, conf, aconf);
    evenWriter.startDefaultLocalityGroup();
    FileSKVWriter oddWriter = FileOperations.getInstance().openWriter(odd, fs, conf, aconf);
    oddWriter.startDefaultLocalityGroup();
    long ts = System.currentTimeMillis();
    Text cf = new Text("cf");
    Text cq = new Text("cq");
    Value value = new Value("value".getBytes());
    for (int i = 0; i < 100; i += 2) {
      Key key = new Key(new Text(String.format("%8d", i)), cf, cq, ts);
      evenWriter.append(key, value);
      key = new Key(new Text(String.format("%8d", i + 1)), cf, cq, ts);
      oddWriter.append(key, value);
    }
    evenWriter.close();
    oddWriter.close();
    exec("createtable t", true);
    exec("importdirectory " + importDir + " " + errorsDir + " true", true);
    exec("scan -r 00000000", true, "00000000", true);
    exec("scan -r 00000099", true, "00000099", true);
    exec("deletetable -f t");
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    fs.deleteOnExit(failures);
    fs.delete(failures, true);
    fs.delete(tempFile, true);
    fs.mkdirs(failures);
    fs.mkdirs(tempFile.getParent());
    FileSKVWriter writer = FileOperations.getInstance().openWriter(tempFile.toString(), fs, defaultConf, AccumuloConfiguration.getDefaultConfiguration());
    writer.startDefaultLocalityGroup();
    List<Pair<Key,Value>> keyVals = new ArrayList<Pair<Key,Value>>();
    for (int i = 0; i < 5; i++) {
      keyVals.add(new Pair<Key,Value>(new Key("a" + i, "b" + i, "c" + i, new ColumnVisibility(""), 1000l + i), new Value(Integer.toString(i).getBytes())));
    }
    for (Pair<Key,Value> keyVal : keyVals) {
      writer.append(keyVal.getFirst(), keyVal.getSecond());
    }
    writer.close();
    ImportTestFilesAndData files = new ImportTestFilesAndData();
    files.failurePath = failures;
    files.importPath = tempFile.getParent();
    files.keyVals = keyVals;
    return files;
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        String tmpFile = memDumpDir + "/memDump" + UUID.randomUUID() + "." + RFile.EXTENSION;
       
        Configuration newConf = new Configuration(conf);
        newConf.setInt("io.seqfile.compress.blocksize", 100000);
       
        FileSKVWriter out = new RFileOperations().openWriter(tmpFile, fs, newConf, ServerConfiguration.getSiteConfiguration());
        out.startDefaultLocalityGroup();
        InterruptibleIterator iter = map.skvIterator();
        iter.seek(new Range(), LocalityGroupUtil.EMPTY_CF_SET, false);
       
        while (iter.hasTop() && activeIters.size() > 0) {
          // RFile does not support MemKey, so we move the kv count into the value only for the RFile.
          // There is no need to change the MemKey to a normal key because the kvCount info gets lost when it is written
          Value newValue = new MemValue(iter.getTopValue(), ((MemKey) iter.getTopKey()).kvCount);
          out.append(iter.getTopKey(), newValue);
          iter.next();
        }
       
        out.close();
       
        log.debug("Created mem dump file " + tmpFile);
       
        memDumpFile = tmpFile;
       
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    String even = new File(importDir, "even.rf").toString();
    String odd = new File(importDir, "odd.rf").toString();
    File errorsDir = folder.newFolder("errors");
    fs.mkdirs(new Path(errorsDir.toString()));
    AccumuloConfiguration aconf = AccumuloConfiguration.getDefaultConfiguration();
    FileSKVWriter evenWriter = FileOperations.getInstance().openWriter(even, fs, conf, aconf);
    evenWriter.startDefaultLocalityGroup();
    FileSKVWriter oddWriter = FileOperations.getInstance().openWriter(odd, fs, conf, aconf);
    oddWriter.startDefaultLocalityGroup();
    long ts = System.currentTimeMillis();
    Text cf = new Text("cf");
    Text cq = new Text("cq");
    Value value = new Value("value".getBytes());
    for (int i = 0; i < 100; i += 2) {
      Key key = new Key(new Text(String.format("%8d", i)), cf, cq, ts);
      evenWriter.append(key, value);
      key = new Key(new Text(String.format("%8d", i + 1)), cf, cq, ts);
      oddWriter.append(key, value);
    }
    evenWriter.close();
    oddWriter.close();
    exec("createtable " + table, true);
    exec("importdirectory " + importDir + " " + errorsDir + " true", true);
    exec("scan -r 00000000", true, "00000000", true);
    exec("scan -r 00000099", true, "00000099", true);
    exec("deletetable -f " + table);
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      // populate the root tablet with info about the default tablet
      // the root tablet contains the key extent and locations of all the
      // metadata tablets
      String initRootTabFile = ServerConstants.getMetadataTableDir() + "/root_tablet/00000_00000."
          + FileOperations.getNewFileExtension(AccumuloConfiguration.getDefaultConfiguration());
      FileSKVWriter mfw = FileOperations.getInstance().openWriter(initRootTabFile, fs, conf, AccumuloConfiguration.getDefaultConfiguration());
      mfw.startDefaultLocalityGroup();

      // -----------] root tablet info
      Text rootExtent = Constants.ROOT_TABLET_EXTENT.getMetadataEntry();

      // root's directory
      Key rootDirKey = new Key(rootExtent, Constants.METADATA_DIRECTORY_COLUMN.getColumnFamily(), Constants.METADATA_DIRECTORY_COLUMN.getColumnQualifier(), 0);
      mfw.append(rootDirKey, new Value("/root_tablet".getBytes(Constants.UTF8)));

      // root's prev row
      Key rootPrevRowKey = new Key(rootExtent, Constants.METADATA_PREV_ROW_COLUMN.getColumnFamily(), Constants.METADATA_PREV_ROW_COLUMN.getColumnQualifier(), 0);
      mfw.append(rootPrevRowKey, new Value(new byte[] {0}));

      // ----------] table tablet info
      Text tableExtent = new Text(KeyExtent.getMetadataEntry(new Text(Constants.METADATA_TABLE_ID), Constants.METADATA_RESERVED_KEYSPACE_START_KEY.getRow()));

      // table tablet's directory
      Key tableDirKey = new Key(tableExtent, Constants.METADATA_DIRECTORY_COLUMN.getColumnFamily(), Constants.METADATA_DIRECTORY_COLUMN.getColumnQualifier(), 0);
      mfw.append(tableDirKey, new Value(Constants.TABLE_TABLET_LOCATION.getBytes(Constants.UTF8)));

      // table tablet time
      Key tableTimeKey = new Key(tableExtent, Constants.METADATA_TIME_COLUMN.getColumnFamily(), Constants.METADATA_TIME_COLUMN.getColumnQualifier(), 0);
      mfw.append(tableTimeKey, new Value((TabletTime.LOGICAL_TIME_ID + "0").getBytes(Constants.UTF8)));

      // table tablet's prevrow
      Key tablePrevRowKey = new Key(tableExtent, Constants.METADATA_PREV_ROW_COLUMN.getColumnFamily(), Constants.METADATA_PREV_ROW_COLUMN.getColumnQualifier(),
          0);
      mfw.append(tablePrevRowKey, KeyExtent.encodePrevEndRow(new Text(KeyExtent.getMetadataEntry(new Text(Constants.METADATA_TABLE_ID), null))));

      // ----------] default tablet info
      Text defaultExtent = new Text(KeyExtent.getMetadataEntry(new Text(Constants.METADATA_TABLE_ID), null));

      // default's directory
      Key defaultDirKey = new Key(defaultExtent, Constants.METADATA_DIRECTORY_COLUMN.getColumnFamily(),
          Constants.METADATA_DIRECTORY_COLUMN.getColumnQualifier(), 0);
      mfw.append(defaultDirKey, new Value(Constants.DEFAULT_TABLET_LOCATION.getBytes(Constants.UTF8)));

      // default's time
      Key defaultTimeKey = new Key(defaultExtent, Constants.METADATA_TIME_COLUMN.getColumnFamily(), Constants.METADATA_TIME_COLUMN.getColumnQualifier(), 0);
      mfw.append(defaultTimeKey, new Value((TabletTime.LOGICAL_TIME_ID + "0").getBytes(Constants.UTF8)));

      // default's prevrow
      Key defaultPrevRowKey = new Key(defaultExtent, Constants.METADATA_PREV_ROW_COLUMN.getColumnFamily(),
          Constants.METADATA_PREV_ROW_COLUMN.getColumnQualifier(), 0);
      mfw.append(defaultPrevRowKey, KeyExtent.encodePrevEndRow(Constants.METADATA_RESERVED_KEYSPACE_START_KEY.getRow()));

      mfw.close();
    }

    // create table and default tablets directories
    try {
      fstat = fs.getFileStatus(defaultMetadataTablet);
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    // table exists
    assertTrue(client.tableExists(creds, "bar"));
    assertFalse(client.tableExists(creds, "test"));
    // bulk import
    String filename = dir + "/bulk/import/rfile.rf";
    FileSKVWriter writer = FileOperations.getInstance().openWriter(filename, fs, fs.getConf(), DefaultConfiguration.getInstance());
    writer.startDefaultLocalityGroup();
    writer.append(new org.apache.accumulo.core.data.Key(new Text("a"), new Text("b"), new Text("c")), new Value("value".getBytes()));
    writer.close();
    fs.mkdirs(new Path(dir + "/bulk/fail"));
    client.importDirectory(creds, "bar", dir + "/bulk/import", dir + "/bulk/fail", true);
    scanner = client.createScanner(creds, "bar", null);
    more = client.nextK(scanner, 100);
    client.closeScanner(scanner);
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  • org.apache.accumulo.core.file.map.MapFileOperations
  • org.apache.accumulo.core.file.rfile.CreateEmpty
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  • org.apache.accumulo.server.init.Initialize
  • org.apache.accumulo.server.tabletserver.Compactor
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