Java AggregateResponse.getFirstPartCount方法代码示例

import org.apache.hadoop.hbase.protobuf.generated.AggregateProtos.AggregateResponse; //导入方法依赖的package包/类
public static <R, S, P extends Message, Q extends Message, T extends Message> CompletableFuture<R>
    max(AsyncTable<?> table, ColumnInterpreter<R, S, P, Q, T> ci, Scan scan) {
  CompletableFuture<R> future = new CompletableFuture<>();
  AggregateRequest req;
  try {
    req = validateArgAndGetPB(scan, ci, false);
  } catch (IOException e) {
    future.completeExceptionally(e);
    return future;
  }
  AbstractAggregationCallback<R> callback = new AbstractAggregationCallback<R>(future) {

    private R max;

    @Override
    protected void aggregate(RegionInfo region, AggregateResponse resp) throws IOException {
      if (resp.getFirstPartCount() > 0) {
        R result = getCellValueFromProto(ci, resp, 0);
        if (max == null || (result != null && ci.compare(max, result) < 0)) {
          max = result;
        }
      }
    }

    @Override
    protected R getFinalResult() {
      return max;
    }
  };
  table
      .<AggregateService, AggregateResponse> coprocessorService(AggregateService::newStub,
        (stub, controller, rpcCallback) -> stub.getMax(controller, req, rpcCallback), callback)
      .fromRow(nullToEmpty(scan.getStartRow()), scan.includeStartRow())
      .toRow(nullToEmpty(scan.getStopRow()), scan.includeStopRow()).execute();
  return future;
}
 

import org.apache.hadoop.hbase.protobuf.generated.AggregateProtos.AggregateResponse; //导入方法依赖的package包/类
public static <R, S, P extends Message, Q extends Message, T extends Message> CompletableFuture<R>
    min(AsyncTable<?> table, ColumnInterpreter<R, S, P, Q, T> ci, Scan scan) {
  CompletableFuture<R> future = new CompletableFuture<>();
  AggregateRequest req;
  try {
    req = validateArgAndGetPB(scan, ci, false);
  } catch (IOException e) {
    future.completeExceptionally(e);
    return future;
  }
  AbstractAggregationCallback<R> callback = new AbstractAggregationCallback<R>(future) {

    private R min;

    @Override
    protected void aggregate(RegionInfo region, AggregateResponse resp) throws IOException {
      if (resp.getFirstPartCount() > 0) {
        R result = getCellValueFromProto(ci, resp, 0);
        if (min == null || (result != null && ci.compare(min, result) > 0)) {
          min = result;
        }
      }
    }

    @Override
    protected R getFinalResult() {
      return min;
    }
  };
  table
      .<AggregateService, AggregateResponse> coprocessorService(AggregateService::newStub,
        (stub, controller, rpcCallback) -> stub.getMin(controller, req, rpcCallback), callback)
      .fromRow(nullToEmpty(scan.getStartRow()), scan.includeStartRow())
      .toRow(nullToEmpty(scan.getStopRow()), scan.includeStopRow()).execute();
  return future;
}
 

import org.apache.hadoop.hbase.protobuf.generated.AggregateProtos.AggregateResponse; //导入方法依赖的package包/类
public static <R, S, P extends Message, Q extends Message, T extends Message> CompletableFuture<S>
    sum(AsyncTable<?> table, ColumnInterpreter<R, S, P, Q, T> ci, Scan scan) {
  CompletableFuture<S> future = new CompletableFuture<>();
  AggregateRequest req;
  try {
    req = validateArgAndGetPB(scan, ci, false);
  } catch (IOException e) {
    future.completeExceptionally(e);
    return future;
  }
  AbstractAggregationCallback<S> callback = new AbstractAggregationCallback<S>(future) {

    private S sum;

    @Override
    protected void aggregate(RegionInfo region, AggregateResponse resp) throws IOException {
      if (resp.getFirstPartCount() > 0) {
        S s = getPromotedValueFromProto(ci, resp, 0);
        sum = ci.add(sum, s);
      }
    }

    @Override
    protected S getFinalResult() {
      return sum;
    }
  };
  table
      .<AggregateService, AggregateResponse> coprocessorService(AggregateService::newStub,
        (stub, controller, rpcCallback) -> stub.getSum(controller, req, rpcCallback), callback)
      .fromRow(nullToEmpty(scan.getStartRow()), scan.includeStartRow())
      .toRow(nullToEmpty(scan.getStopRow()), scan.includeStopRow()).execute();
  return future;
}
 

import org.apache.hadoop.hbase.protobuf.generated.AggregateProtos.AggregateResponse; //导入方法依赖的package包/类
public static <R, S, P extends Message, Q extends Message, T extends Message>
    CompletableFuture<Double>
    avg(AsyncTable<?> table, ColumnInterpreter<R, S, P, Q, T> ci, Scan scan) {
  CompletableFuture<Double> future = new CompletableFuture<>();
  AggregateRequest req;
  try {
    req = validateArgAndGetPB(scan, ci, false);
  } catch (IOException e) {
    future.completeExceptionally(e);
    return future;
  }
  AbstractAggregationCallback<Double> callback = new AbstractAggregationCallback<Double>(future) {

    private S sum;

    long count = 0L;

    @Override
    protected void aggregate(RegionInfo region, AggregateResponse resp) throws IOException {
      if (resp.getFirstPartCount() > 0) {
        sum = ci.add(sum, getPromotedValueFromProto(ci, resp, 0));
        count += resp.getSecondPart().asReadOnlyByteBuffer().getLong();
      }
    }

    @Override
    protected Double getFinalResult() {
      return ci.divideForAvg(sum, count);
    }
  };
  table
      .<AggregateService, AggregateResponse> coprocessorService(AggregateService::newStub,
        (stub, controller, rpcCallback) -> stub.getAvg(controller, req, rpcCallback), callback)
      .fromRow(nullToEmpty(scan.getStartRow()), scan.includeStartRow())
      .toRow(nullToEmpty(scan.getStopRow()), scan.includeStopRow()).execute();
  return future;
}
 

import org.apache.hadoop.hbase.protobuf.generated.AggregateProtos.AggregateResponse; //导入方法依赖的package包/类
private static <R, S, P extends Message, Q extends Message, T extends Message>
    CompletableFuture<NavigableMap<byte[], S>>
    sumByRegion(AsyncTable<?> table, ColumnInterpreter<R, S, P, Q, T> ci, Scan scan) {
  CompletableFuture<NavigableMap<byte[], S>> future =
      new CompletableFuture<NavigableMap<byte[], S>>();
  AggregateRequest req;
  try {
    req = validateArgAndGetPB(scan, ci, false);
  } catch (IOException e) {
    future.completeExceptionally(e);
    return future;
  }
  int firstPartIndex = scan.getFamilyMap().get(scan.getFamilies()[0]).size() - 1;
  AbstractAggregationCallback<NavigableMap<byte[], S>> callback =
      new AbstractAggregationCallback<NavigableMap<byte[], S>>(future) {

        private final NavigableMap<byte[], S> map = new TreeMap<>(Bytes.BYTES_COMPARATOR);

        @Override
        protected void aggregate(RegionInfo region, AggregateResponse resp) throws IOException {
          if (resp.getFirstPartCount() > 0) {
            map.put(region.getStartKey(), getPromotedValueFromProto(ci, resp, firstPartIndex));
          }
        }

        @Override
        protected NavigableMap<byte[], S> getFinalResult() {
          return map;
        }
      };
  table
      .<AggregateService, AggregateResponse> coprocessorService(AggregateService::newStub,
        (stub, controller, rpcCallback) -> stub.getMedian(controller, req, rpcCallback), callback)
      .fromRow(nullToEmpty(scan.getStartRow()), scan.includeStartRow())
      .toRow(nullToEmpty(scan.getStopRow()), scan.includeStopRow()).execute();
  return future;
}
 

import org.apache.hadoop.hbase.protobuf.generated.AggregateProtos.AggregateResponse; //导入方法依赖的package包/类
public static <R, S, P extends Message, Q extends Message, T extends Message>
    CompletableFuture<Double>
    std(AsyncTable<?> table, ColumnInterpreter<R, S, P, Q, T> ci, Scan scan) {
  CompletableFuture<Double> future = new CompletableFuture<>();
  AggregateRequest req;
  try {
    req = validateArgAndGetPB(scan, ci, false);
  } catch (IOException e) {
    future.completeExceptionally(e);
    return future;
  }
  AbstractAggregationCallback<Double> callback = new AbstractAggregationCallback<Double>(future) {

    private S sum;

    private S sumSq;

    private long count;

    @Override
    protected void aggregate(RegionInfo region, AggregateResponse resp) throws IOException {
      if (resp.getFirstPartCount() > 0) {
        sum = ci.add(sum, getPromotedValueFromProto(ci, resp, 0));
        sumSq = ci.add(sumSq, getPromotedValueFromProto(ci, resp, 1));
        count += resp.getSecondPart().asReadOnlyByteBuffer().getLong();
      }
    }

    @Override
    protected Double getFinalResult() {
      double avg = ci.divideForAvg(sum, count);
      double avgSq = ci.divideForAvg(sumSq, count);
      return Math.sqrt(avgSq - avg * avg);
    }
  };
  table
      .<AggregateService, AggregateResponse> coprocessorService(AggregateService::newStub,
        (stub, controller, rpcCallback) -> stub.getStd(controller, req, rpcCallback), callback)
      .fromRow(nullToEmpty(scan.getStartRow()), scan.includeStartRow())
      .toRow(nullToEmpty(scan.getStopRow()), scan.includeStopRow()).execute();
  return future;
}