Examples of org.apache.hadoop.hbase.regionserver.KeyValueHeap.seek()

org.apache.hadoop.hbase.regionserver.KeyValueHeap.seek()

Seeks all scanners at or below the specified seek key. If we earlied-out of a row, we may end up skipping values that were never reached yet. Rather than iterating down, we want to give the opportunity to re-seek.

As individual scanners may run past their ends, those scanners are automatically closed and removed from the heap.

This function (and {@link #reseek(KeyValue)}) does not do multi-column Bloom filter and lazy-seek optimizations. To enable those, call {@link #requestSeek(KeyValue,boolean,boolean)}. @param seekKey KeyValue to seek at or after @return true if KeyValues exist at or after specified key, false if not @throws IOException

      scanner.seek(fakeKV); // have to call seek of each underlying scanner, otherwise KeyValueHeap won't work
      scanners.add(scanner);
    }
    assertTrue(!scanners.isEmpty());
    KeyValueScanner kvh = new KeyValueHeap(scanners, KeyValue.COMPARATOR);
    boolean seekOk = kvh.seek(fakeKV);
    assertTrue(seekOk);
    KeyValue kv = kvh.next();
    kvh.close();
    return kv;
  }

      scanner.seek(fakeKV); // have to call seek of each underlying scanner, otherwise KeyValueHeap won't work
      scanners.add(scanner);
    }
    assertTrue(!scanners.isEmpty());
    KeyValueScanner kvh = new KeyValueHeap(scanners, KeyValue.COMPARATOR);
    boolean seekOk = kvh.seek(fakeKV);
    assertTrue(seekOk);
    KeyValue kv = kvh.next();
    kvh.close();
    return kv;
  }

      scanner.seek(fakeKV); // have to call seek of each underlying scanner, otherwise KeyValueHeap won't work
      scanners.add(scanner);
    }
    assertTrue(!scanners.isEmpty());
    KeyValueScanner kvh = new KeyValueHeap(scanners, KeyValue.COMPARATOR);
    boolean seekOk = kvh.seek(fakeKV);
    assertTrue(seekOk);
    KeyValue kv = kvh.next();
    kvh.close();
    return kv;
  }

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