Package org.apache.accumulo.core.client

Examples of org.apache.accumulo.core.client.Scanner.fetchColumnFamily()

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  public static SortedMap<String,DataFileValue> getDataFileSizes(KeyExtent extent, TCredentials credentials) {
    TreeMap<String,DataFileValue> sizes = new TreeMap<String,DataFileValue>();
   
    Scanner mdScanner = new ScannerImpl(HdfsZooInstance.getInstance(), credentials, Constants.METADATA_TABLE_ID, Constants.NO_AUTHS);
    mdScanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
    Text row = extent.getMetadataEntry();
   
    Key endKey = new Key(row, Constants.METADATA_DATAFILE_COLUMN_FAMILY, new Text(""));
    endKey = endKey.followingKey(PartialKey.ROW_COLFAM);
   
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      Key rowKey = new Key(metadataEntry);
     
      SortedMap<String,DataFileValue> origDatafileSizes = new TreeMap<String,DataFileValue>();
      SortedMap<String,DataFileValue> highDatafileSizes = new TreeMap<String,DataFileValue>();
      SortedMap<String,DataFileValue> lowDatafileSizes = new TreeMap<String,DataFileValue>();
      scanner3.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
      scanner3.setRange(new Range(rowKey, rowKey.followingKey(PartialKey.ROW)));
     
      for (Entry<Key,Value> entry : scanner3) {
        if (entry.getKey().compareColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY) == 0) {
          origDatafileSizes.put(entry.getKey().getColumnQualifier().toString(), new DataFileValue(entry.getValue().get()));
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    ms.setRange(new KeyExtent(tableIdText, null, null).toMetadataRange());
   
    // insert deletes before deleting data from !METADATA... this makes the code fault tolerant
    if (insertDeletes) {
     
      ms.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
      Constants.METADATA_DIRECTORY_COLUMN.fetch(ms);
     
      for (Entry<Key,Value> cell : ms) {
        Key key = cell.getKey();
       
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        sizes.put(Constants.ZROOT_TABLET + "/" + fileStatus.getPath().getName(), dfv);
      }
     
    } else {
      Scanner scanner = new ScannerImpl(HdfsZooInstance.getInstance(), credentials, Constants.METADATA_TABLE_ID, Constants.NO_AUTHS);
      scanner.fetchColumnFamily(Constants.METADATA_LOG_COLUMN_FAMILY);
      scanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
      scanner.setRange(extent.toMetadataRange());
     
      for (Entry<Key,Value> entry : scanner) {
        if (!entry.getKey().getRow().equals(extent.getMetadataEntry())) {
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      }
     
    } else {
      Scanner scanner = new ScannerImpl(HdfsZooInstance.getInstance(), credentials, Constants.METADATA_TABLE_ID, Constants.NO_AUTHS);
      scanner.fetchColumnFamily(Constants.METADATA_LOG_COLUMN_FAMILY);
      scanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
      scanner.setRange(extent.toMetadataRange());
     
      for (Entry<Key,Value> entry : scanner) {
        if (!entry.getKey().getRow().equals(extent.getMetadataEntry())) {
          throw new RuntimeException("Unexpected row " + entry.getKey().getRow() + " expected " + extent.getMetadataEntry());
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    }
  }
 
  private static Scanner getTabletLogScanner(TCredentials credentials, KeyExtent extent) {
    Scanner scanner = new ScannerImpl(HdfsZooInstance.getInstance(), credentials, Constants.METADATA_TABLE_ID, Constants.NO_AUTHS);
    scanner.fetchColumnFamily(Constants.METADATA_LOG_COLUMN_FAMILY);
    Text start = extent.getMetadataEntry();
    Key endKey = new Key(start, Constants.METADATA_LOG_COLUMN_FAMILY);
    endKey = endKey.followingKey(PartialKey.ROW_COLFAM);
    scanner.setRange(new Range(new Key(start), endKey));
    return scanner;
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  }
 
  private static Scanner createCloneScanner(String tableId, Connector conn) throws TableNotFoundException {
    Scanner mscanner = new IsolatedScanner(conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS));
    mscanner.setRange(new KeyExtent(new Text(tableId), null, null).toMetadataRange());
    mscanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_LAST_LOCATION_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_CLONED_COLUMN_FAMILY);
    Constants.METADATA_PREV_ROW_COLUMN.fetch(mscanner);
    Constants.METADATA_TIME_COLUMN.fetch(mscanner);
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  private static Scanner createCloneScanner(String tableId, Connector conn) throws TableNotFoundException {
    Scanner mscanner = new IsolatedScanner(conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS));
    mscanner.setRange(new KeyExtent(new Text(tableId), null, null).toMetadataRange());
    mscanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_LAST_LOCATION_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_CLONED_COLUMN_FAMILY);
    Constants.METADATA_PREV_ROW_COLUMN.fetch(mscanner);
    Constants.METADATA_TIME_COLUMN.fetch(mscanner);
    return mscanner;
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  private static Scanner createCloneScanner(String tableId, Connector conn) throws TableNotFoundException {
    Scanner mscanner = new IsolatedScanner(conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS));
    mscanner.setRange(new KeyExtent(new Text(tableId), null, null).toMetadataRange());
    mscanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_LAST_LOCATION_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_CLONED_COLUMN_FAMILY);
    Constants.METADATA_PREV_ROW_COLUMN.fetch(mscanner);
    Constants.METADATA_TIME_COLUMN.fetch(mscanner);
    return mscanner;
  }
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    Scanner mscanner = new IsolatedScanner(conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS));
    mscanner.setRange(new KeyExtent(new Text(tableId), null, null).toMetadataRange());
    mscanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_LAST_LOCATION_COLUMN_FAMILY);
    mscanner.fetchColumnFamily(Constants.METADATA_CLONED_COLUMN_FAMILY);
    Constants.METADATA_PREV_ROW_COLUMN.fetch(mscanner);
    Constants.METADATA_TIME_COLUMN.fetch(mscanner);
    return mscanner;
  }
 
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