Examples of org.apache.accumulo.core.client.RowIterator

org.apache.accumulo.core.client.RowIterator
Group Key/Value pairs into Iterators over rows. Suggested usage:
```
 RowIterator rowIterator = new RowIterator(connector.createScanner(tableName, authorizations)); 
```

    List<String> tableNames = (List<String>) state.get("tables");
    
    String tableName = tableNames.get(rand.nextInt(tableNames.size()));
    
    try {
      RowIterator iter = new RowIterator(new IsolatedScanner(conn.createScanner(tableName, Constants.NO_AUTHS)));
      
      while (iter.hasNext()) {
        PeekingIterator<Entry<Key,Value>> row = new PeekingIterator<Entry<Key,Value>>(iter.next());
        Entry<Key,Value> kv = null;
        if (row.hasNext())
          kv = row.peek();
        while (row.hasNext()) {
          Entry<Key,Value> currentKV = row.next();

View Full Code Here

      // either disappear entirely or not all.. this is important for the case
      // where the process terminates in the loop below...
      scanner = conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS);
      log.debug("Deleting range " + scanRange);
      scanner.setRange(scanRange);
      RowIterator rowIter = new RowIterator(scanner);
      while (rowIter.hasNext()) {
        Iterator<Entry<Key,Value>> row = rowIter.next();
        m = null;
        while (row.hasNext()) {
          Entry<Key,Value> entry = row.next();
          Key key = entry.getKey();

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    // either disappear entirely or not all.. this is important for the case
    // where the process terminates in the loop below...
    scanner = conn.createScanner(info.getExtent().isMeta() ? RootTable.NAME : MetadataTable.NAME, Authorizations.EMPTY);
    Master.log.debug("Deleting range " + scanRange);
    scanner.setRange(scanRange);
    RowIterator rowIter = new RowIterator(scanner);
    while (rowIter.hasNext()) {
      Iterator<Entry<Key,Value>> row = rowIter.next();
      m = null;
      while (row.hasNext()) {
        Entry<Key,Value> entry = row.next();
        Key key = entry.getKey();

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      scanner = new IsolatedScanner(scanner);
      TabletsSection.TabletColumnFamily.PREV_ROW_COLUMN.fetch(scanner);
      scanner.fetchColumnFamily(TabletsSection.CurrentLocationColumnFamily.NAME);
      scanner.setRange(range);


      RowIterator rowIter = new RowIterator(scanner);


      KeyExtent lastExtent = null;


      int total = 0;
      int waitFor = 0;
      int holes = 0;
      Text continueRow = null;
      MapCounter<String> serverCounts = new MapCounter<String>();


      while (rowIter.hasNext()) {
        Iterator<Entry<Key,Value>> row = rowIter.next();


        total++;


        KeyExtent extent = null;
        String future = null;

View Full Code Here

  private Pair<KeyExtent,String> getTabletFiles(Range nextRange, List<String> relFiles) throws TableNotFoundException {
    Scanner scanner = conn.createScanner(MetadataTable.NAME, Authorizations.EMPTY);
    scanner.setBatchSize(100);
    scanner.setRange(nextRange);
    
    RowIterator rowIter = new RowIterator(scanner);
    Iterator<Entry<Key,Value>> row = rowIter.next();
    
    KeyExtent extent = null;
    String location = null;
    
    while (row.hasNext()) {

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    Assert.assertFalse(failed.get());


    Scanner scanner = conn.createScanner(table, Authorizations.EMPTY);


    RowIterator rowIter = new RowIterator(scanner);


    while (rowIter.hasNext()) {
      Iterator<Entry<Key,Value>> row = rowIter.next();
      new Stats(row);
    }
  }

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      scanner.fetchColumnFamily(MetadataSchema.TabletsSection.LastLocationColumnFamily.NAME);
      scanner.fetchColumnFamily(MetadataSchema.TabletsSection.CurrentLocationColumnFamily.NAME);
      scanner.fetchColumnFamily(MetadataSchema.TabletsSection.FutureLocationColumnFamily.NAME);
      scanner.setRange(metadataRange);


      RowIterator rowIter = new RowIterator(scanner);
      KeyExtent lastExtent = null;
      while (rowIter.hasNext()) {
        Iterator<Map.Entry<Key,Value>> row = rowIter.next();
        String last = "";
        KeyExtent extent = null;
        String location = null;


        while (row.hasNext()) {

View Full Code Here

  public long deleteByQuery(Query<K,T> query) {
    try {
      Scanner scanner = createScanner(query);
      // add iterator that drops values on the server side
      scanner.addScanIterator(new IteratorSetting(Integer.MAX_VALUE, SortedKeyIterator.class));
      RowIterator iterator = new RowIterator(scanner.iterator());


      long count = 0;


      while (iterator.hasNext()) {
        Iterator<Entry<Key,Value>> row = iterator.next();
        Mutation m = null;
        while (row.hasNext()) {
          Entry<Key,Value> entry = row.next();
          Key key = entry.getKey();
          if (m == null)

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   */
  public AccumuloResult(DataStore<K,T> dataStore, Query<K,T> query, Scanner scanner) {
    super(dataStore, query);
    
    // TODO set batch size based on limit, and construct iterator later
    iterator = new RowIterator(scanner.iterator());
  }

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      // either dissapear entirely or not all.. this is important for the case
      // where the process terminates in the loop below...
      scanner = conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS);
      log.debug("Deleting range " + scanRange);
      scanner.setRange(scanRange);
      RowIterator rowIter = new RowIterator(scanner);
      while (rowIter.hasNext()) {
        Iterator<Entry<Key,Value>> row = rowIter.next();
        m = null;
        while (row.hasNext()) {
          Entry<Key,Value> entry = row.next();
          Key key = entry.getKey();

View Full Code Here

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