Package org.apache.accumulo.core.iterators.system

Examples of org.apache.accumulo.core.iterators.system.CountingIterator

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      if (imm != null) {
        iters.add(imm.compactionIterator());
      }
     
      CountingIterator citr = new CountingIterator(new MultiIterator(iters, extent.toDataRange()));
      DeletingIterator delIter = new DeletingIterator(citr, propogateDeletes);
      ColumnFamilySkippingIterator cfsi = new ColumnFamilySkippingIterator(delIter);
     

      // if(env.getIteratorScope() )
     
      TabletIteratorEnvironment iterEnv;
      if (env.getIteratorScope() == IteratorScope.majc)
        iterEnv = new TabletIteratorEnvironment(IteratorScope.majc, !propogateDeletes, acuTableConf);
      else if (env.getIteratorScope() == IteratorScope.minc)
        iterEnv = new TabletIteratorEnvironment(IteratorScope.minc, acuTableConf);
      else
        throw new IllegalArgumentException();
     
      SortedKeyValueIterator<Key,Value> itr = iterEnv.getTopLevelIterator(IteratorUtil.loadIterators(env.getIteratorScope(), cfsi, extent, acuTableConf,
          iterEnv));
     
      itr.seek(extent.toDataRange(), columnFamilies, inclusive);
     
      if (!inclusive) {
        mfw.startDefaultLocalityGroup();
      } else {
        mfw.startNewLocalityGroup(lgName, columnFamilies);
      }
     
      Span write = Trace.start("write");
      try {
        while (itr.hasTop() && env.isCompactionEnabled()) {
          mfw.append(itr.getTopKey(), itr.getTopValue());
          itr.next();
          entriesCompacted++;
        }
       
        if (itr.hasTop() && !env.isCompactionEnabled()) {
          // cancel major compaction operation
          try {
            try {
              mfw.close();
            } catch (IOException e) {
              log.error(e, e);
            }
            fs.delete(new Path(outputFile), true);
          } catch (Exception e) {
            log.warn("Failed to delete Canceled compaction output file " + outputFile, e);
          }
          throw new CompactionCanceledException();
        }
       
      } finally {
        CompactionStats lgMajcStats = new CompactionStats(citr.getCount(), entriesCompacted);
        majCStats.add(lgMajcStats);
        write.stop();
      }
     
    } finally {
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  @SuppressWarnings("unchecked")
    private static long process(TreeMap<Key,Value> sourceMap, TreeMap<Key,Value> resultMap, Range range, int numScans) throws IOException
    {
      org.apache.accumulo.core.iterators.SortedMapIterator source = new SortedMapIterator(sourceMap);
      CountingIterator counter = new CountingIterator(source);
      FirstEntryInRowIterator feiri = new FirstEntryInRowIterator();
      IteratorEnvironment env = new IteratorEnvironment(){

        public AccumuloConfiguration getConfig() {
          return null;
        }

        public IteratorScope getIteratorScope() {
          return null;
        }

        public boolean isFullMajorCompaction() {
          return false;
        }

        public void registerSideChannel(SortedKeyValueIterator<Key, Value> arg0) {

        }

        public SortedKeyValueIterator<Key, Value> reserveMapFileReader(
            String arg0) throws IOException {
          return null;
        }};

        feiri.init(counter, Collections.singletonMap(FirstEntryInRowIterator.NUM_SCANS_STRING_NAME, Integer.toString(numScans)), env);

        feiri.seek(range, Collections.EMPTY_SET, false);
        while(feiri.hasTop())
        {
          resultMap.put(feiri.getTopKey(), feiri.getTopValue());
          feiri.next();
        }
        return counter.getCount();
    }
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      if (imm != null) {
        iters.add(imm.compactionIterator());
      }
     
      CountingIterator citr = new CountingIterator(new MultiIterator(iters, extent.toDataRange()));
      DeletingIterator delIter = new DeletingIterator(citr, propogateDeletes);
      ColumnFamilySkippingIterator cfsi = new ColumnFamilySkippingIterator(delIter);
     

      // if(env.getIteratorScope() )
     
      TabletIteratorEnvironment iterEnv;
      if (env.getIteratorScope() == IteratorScope.majc)
        iterEnv = new TabletIteratorEnvironment(IteratorScope.majc, !propogateDeletes, acuTableConf);
      else if (env.getIteratorScope() == IteratorScope.minc)
        iterEnv = new TabletIteratorEnvironment(IteratorScope.minc, acuTableConf);
      else
        throw new IllegalArgumentException();
     
      SortedKeyValueIterator<Key,Value> itr = iterEnv.getTopLevelIterator(IteratorUtil.loadIterators(env.getIteratorScope(), cfsi, extent, acuTableConf,
          iterEnv));
     
      itr.seek(extent.toDataRange(), columnFamilies, inclusive);
     
      if (!inclusive) {
        mfw.startDefaultLocalityGroup();
      } else {
        mfw.startNewLocalityGroup(lgName, columnFamilies);
      }
     
      Span write = Trace.start("write");
      try {
        while (itr.hasTop() && env.isCompactionEnabled()) {
          mfw.append(itr.getTopKey(), itr.getTopValue());
          itr.next();
          entriesCompacted++;
        }
       
        if (itr.hasTop() && !env.isCompactionEnabled()) {
          // cancel major compaction operation
          try {
            try {
              mfw.close();
            } catch (IOException e) {
              log.error(e, e);
            }
            fs.delete(new Path(outputFile), true);
          } catch (Exception e) {
            log.warn("Failed to delete Canceled compaction output file " + outputFile, e);
          }
          throw new CompactionCanceledException();
        }
       
      } finally {
        CompactionStats lgMajcStats = new CompactionStats(citr.getCount(), entriesCompacted);
        majCStats.add(lgMajcStats);
        write.stop();
      }
     
    } finally {
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          put(tm1, r, cf, cq, 6, r * cf * cq);
        }
      }
    }
   
    CountingIterator ci = new CountingIterator(new SortedMapIterator(tm1));
    ColumnFamilySkippingIterator cfi = new ColumnFamilySkippingIterator(ci);
    HashSet<ByteSequence> colfams = new HashSet<ByteSequence>();
    colfams.add(new ArrayByteSequence(String.format("%06d", 4)));
   
    Range range = new Range(nk(0, 4, 0, 6), true, nk(0, 400, 0, 6), true);
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      if (imm != null) {
        iters.add(imm.compactionIterator());
      }
     
      CountingIterator citr = new CountingIterator(new MultiIterator(iters, extent.toDataRange()));
      DeletingIterator delIter = new DeletingIterator(citr, propogateDeletes);
     
      // if(env.getIteratorScope() )
     
      TabletIteratorEnvironment iterEnv;
      if (env.getIteratorScope() == IteratorScope.majc)
        iterEnv = new TabletIteratorEnvironment(IteratorScope.majc, !propogateDeletes, acuTableConf);
      else if (env.getIteratorScope() == IteratorScope.minc)
        iterEnv = new TabletIteratorEnvironment(IteratorScope.minc, acuTableConf);
      else
        throw new IllegalArgumentException();
     
      SortedKeyValueIterator<Key,Value> itr = iterEnv.getTopLevelIterator(IteratorUtil.loadIterators(env.getIteratorScope(), delIter, extent, acuTableConf,
          iterEnv));
     
      itr.seek(extent.toDataRange(), columnFamilies, inclusive);
     
      if (!inclusive) {
        mfw.startDefaultLocalityGroup();
      } else {
        mfw.startNewLocalityGroup(lgName, columnFamilies);
      }
     
      Span write = Trace.start("write");
      try {
        while (itr.hasTop() && env.isCompactionEnabled()) {
          mfw.append(itr.getTopKey(), itr.getTopValue());
          itr.next();
          entriesCompacted++;
        }
       
        if (itr.hasTop() && !env.isCompactionEnabled()) {
          // cancel major compaction operation
          try {
            try {
              mfw.close();
            } catch (IOException e) {
              log.error(e, e);
            }
            fs.delete(new Path(outputFile), true);
          } catch (Exception e) {
            log.warn("Failed to delete Canceled compaction output file " + outputFile, e);
          }
          throw new CompactionCanceledException();
        }
       
      } finally {
        CompactionStats lgMajcStats = new CompactionStats(citr.getCount(), entriesCompacted);
        majCStats.add(lgMajcStats);
        write.stop();
      }
     
    } finally {
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Related Classes of org.apache.accumulo.core.iterators.system.CountingIterator

  • org.apache.accumulo.core.iterators.FirstEntryInRowIteratorTest
  • org.apache.accumulo.core.iterators.system.ColumnFamilySkippingIteratorTest
  • org.apache.accumulo.server.tabletserver.Compactor
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