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Java ScannerContext类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了Java中org.apache.hadoop.hbase.regionserver.ScannerContext的典型用法代码示例。如果您正苦于以下问题:Java ScannerContext类的具体用法?Java ScannerContext怎么用?Java ScannerContext使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。



ScannerContext类属于org.apache.hadoop.hbase.regionserver包,在下文中一共展示了ScannerContext类的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的Java代码示例。

示例1: nextRaw

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean nextRaw(final List<Cell> output, final ScannerContext scannerContext) throws IOException {
    final List<Cell> input = new ArrayList<>();
    final boolean shouldContinue = getScanner().nextRaw(input);
    _next(input, output);
    return shouldContinue;
}
 
开发者ID:gchq,项目名称:Gaffer,代码行数:8,代码来源:QueryScanner.java


示例2: preCompact

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public InternalScanner preCompact(ObserverContext<RegionCoprocessorEnvironment> e, Store store,
    InternalScanner scanner, ScanType scanType, CompactionLifeCycleTracker tracker,
    CompactionRequest request) {
  return new InternalScanner() {

    @Override
    public boolean next(List<Cell> results, ScannerContext scannerContext) throws IOException {
      List<Cell> internalResults = new ArrayList<>();
      boolean hasMore;
      do {
        hasMore = scanner.next(internalResults, scannerContext);
        if (!internalResults.isEmpty()) {
          long row = Bytes.toLong(CellUtil.cloneValue(internalResults.get(0)));
          if (row % 2 == 0) {
            // return this row
            break;
          }
          // clear and continue
          internalResults.clear();
        }
      } while (hasMore);

      if (!internalResults.isEmpty()) {
        results.addAll(internalResults);
      }
      return hasMore;
    }

    @Override
    public void close() throws IOException {
      scanner.close();
    }
  };
}
 
开发者ID:apache,项目名称:hbase,代码行数:36,代码来源:TestRegionObserverInterface.java


示例3: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean next(List<Cell> result, ScannerContext scannerContext)
    throws IOException {
  if (kvs.isEmpty()) return false;
  result.add(kvs.remove(0));
  return !kvs.isEmpty();
}
 
开发者ID:apache,项目名称:hbase,代码行数:8,代码来源:TestStripeCompactionPolicy.java


示例4: internalNext

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
public boolean internalNext(List<Cell> outResult,ScannerContext scannerContext) throws IOException {
    if (beginRow) {
        beginRow = false;
        if (LOG.isTraceEnabled())
            SpliceLogUtils.trace(LOG, "Next: memstore begin");
        return outResult.add(ClientRegionConstants.MEMSTORE_BEGIN);
    }
    if (endRowNeedsToBeReturned) {
        try {
            outResult.add(new KeyValue(Bytes.toBytes(counter), ClientRegionConstants.HOLD, ClientRegionConstants.HOLD, HConstants.LATEST_TIMESTAMP, ClientRegionConstants.HOLD));
            return HBasePlatformUtils.scannerEndReached(scannerContext);
        } finally {
            counter++;
        }
    }
    if (didWeFlush()) {
        if (flushAlreadyReturned) {
            try {
                outResult.add(new KeyValue(Bytes.toBytes(counter),
                        ClientRegionConstants.FLUSH, ClientRegionConstants.FLUSH, Long.MAX_VALUE, ClientRegionConstants.FLUSH));
                return HBasePlatformUtils.scannerEndReached(scannerContext);
            } finally {
                counter++;
            }
        } else {
            flushAlreadyReturned = true;
            if (LOG.isTraceEnabled())
                SpliceLogUtils.trace(LOG, "Next: returning begin flush ");
            outResult.add(ClientRegionConstants.MEMSTORE_BEGIN_FLUSH);
        }
        return HBasePlatformUtils.scannerEndReached(scannerContext);
    }
    return directInternalNext(outResult,scannerContext);
}
 
开发者ID:splicemachine,项目名称:spliceengine,代码行数:35,代码来源:MemStoreFlushAwareScanner.java


示例5: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean next(List<Cell> result, ScannerContext scannerContext)
    throws IOException {
  return delegate.next(result, scannerContext);
}
 
开发者ID:fengchen8086,项目名称:ditb,代码行数:6,代码来源:TestCoprocessorInterface.java


示例6: nextRaw

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean nextRaw(List<Cell> result, ScannerContext context)
    throws IOException {
  return delegate.nextRaw(result, context);
}
 
开发者ID:fengchen8086,项目名称:ditb,代码行数:6,代码来源:TestCoprocessorInterface.java


示例7: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean next(List<Cell> result, ScannerContext scannerContext)
    throws IOException {
  return next(result);
}
 
开发者ID:fengchen8086,项目名称:ditb,代码行数:6,代码来源:TestStripeCompactionPolicy.java


示例8: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
public boolean next(List<Cell> result,
        ScannerContext scannerContext) throws IOException {
    return next(result, scannerContext.getBatchLimit());
}
 
开发者ID:apache,项目名称:incubator-omid,代码行数:5,代码来源:OmidRegionScanner.java


示例9: nextRaw

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
public boolean nextRaw(List<Cell> result,
        ScannerContext scannerContext) throws IOException {
    return nextRaw(result, scannerContext.getBatchLimit());
}
 
开发者ID:apache,项目名称:incubator-omid,代码行数:5,代码来源:OmidRegionScanner.java


示例10: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean next(final List<Cell> output, final ScannerContext scannerContext) throws IOException {
    return next(output);
}
 
开发者ID:gchq,项目名称:Gaffer,代码行数:5,代码来源:GafferScanner.java


示例11: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean next(List<Cell> result, ScannerContext scannerContext) throws IOException {
  return delegate.next(result, scannerContext);
}
 
开发者ID:apache,项目名称:hbase,代码行数:5,代码来源:TestBlockEvictionFromClient.java


示例12: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean next(List<Cell> result, ScannerContext scannerContext) throws IOException {
  return false;
}
 
开发者ID:apache,项目名称:hbase,代码行数:5,代码来源:TestRegionObserverScannerOpenHook.java


示例13: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean next(List<Cell> result, ScannerContext scannerContext) throws IOException {
  if (kvs.isEmpty()) return false;
  result.add(kvs.remove(0));
  return !kvs.isEmpty();
}
 
开发者ID:apache,项目名称:hbase,代码行数:7,代码来源:TestCompactor.java


示例14: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean next(List<Cell> result, ScannerContext scannerContext) throws IOException {
  return scanner.next(result, scannerContext);
}
 
开发者ID:apache,项目名称:hbase,代码行数:5,代码来源:DelegatingInternalScanner.java


示例15: wrap

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
private InternalScanner wrap(byte[] family, InternalScanner scanner) {
  return new InternalScanner() {

    private List<Cell> srcResult = new ArrayList<>();

    private byte[] row;

    private byte[] qualifier;

    private long timestamp;

    private long sum;

    @Override
    public boolean next(List<Cell> result, ScannerContext scannerContext) throws IOException {
      boolean moreRows = scanner.next(srcResult, scannerContext);
      if (srcResult.isEmpty()) {
        if (!moreRows && row != null) {
          result.add(createCell(row, family, qualifier, timestamp, sum));
        }
        return moreRows;
      }
      Cell firstCell = srcResult.get(0);
      // Check if there is a row change first. All the cells will come from the same row so just
      // check the first one once is enough.
      if (row == null) {
        row = CellUtil.cloneRow(firstCell);
        qualifier = CellUtil.cloneQualifier(firstCell);
      } else if (!CellUtil.matchingRows(firstCell, row)) {
        result.add(createCell(row, family, qualifier, timestamp, sum));
        row = CellUtil.cloneRow(firstCell);
        qualifier = CellUtil.cloneQualifier(firstCell);
        sum = 0;
      }
      srcResult.forEach(c -> {
        if (CellUtil.matchingQualifier(c, qualifier)) {
          sum += Bytes.toLong(c.getValueArray(), c.getValueOffset());
        } else {
          result.add(createCell(row, family, qualifier, timestamp, sum));
          qualifier = CellUtil.cloneQualifier(c);
          sum = Bytes.toLong(c.getValueArray(), c.getValueOffset());
        }
        timestamp = c.getTimestamp();
      });
      if (!moreRows) {
        result.add(createCell(row, family, qualifier, timestamp, sum));
      }
      srcResult.clear();
      return moreRows;
    }

    @Override
    public void close() throws IOException {
      scanner.close();
    }
  };
}
 
开发者ID:apache,项目名称:hbase,代码行数:58,代码来源:WriteHeavyIncrementObserver.java


示例16: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean next(List<Cell> result, ScannerContext scannerContext) throws IOException {
    return next(result);
}
 
开发者ID:splicemachine,项目名称:spliceengine,代码行数:5,代码来源:SICompactionScanner.java


示例17: nextRaw

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
public boolean nextRaw(List<Cell> cells, ScannerContext scannerContext) throws IOException {
    return nextRaw(cells);
}
 
开发者ID:splicemachine,项目名称:spliceengine,代码行数:4,代码来源:HBase10ClientSideRegionScanner.java


示例18: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
public boolean next(List<Cell> cells, ScannerContext scannerContext) throws IOException {
    return nextRaw(cells);
}
 
开发者ID:splicemachine,项目名称:spliceengine,代码行数:4,代码来源:HBase10ClientSideRegionScanner.java


示例19: nextRaw

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean nextRaw(List<Cell> result, ScannerContext scannerContext) throws IOException {
    return nextInternal(result);
}
 
开发者ID:splicemachine,项目名称:spliceengine,代码行数:5,代码来源:SplitRegionScanner.java


示例20: next

import org.apache.hadoop.hbase.regionserver.ScannerContext; //导入依赖的package包/类
@Override
public boolean next(List<Cell> result, ScannerContext scannerContext) throws IOException {
    return nextInternal(result);
}
 
开发者ID:splicemachine,项目名称:spliceengine,代码行数:5,代码来源:SplitRegionScanner.java



注:本文中的org.apache.hadoop.hbase.regionserver.ScannerContext类示例整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


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