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

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

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

org.apache.accumulo.core.iterators.system.SourceSwitchingIterator
A SortedKeyValueIterator which presents a view over some section of data, regardless of whether or not it is backed by memory (InMemoryMap) or an RFile (InMemoryMap that was minor compacted to a file). Clients reading from a table that has data in memory should not see interruption in their scan when that data is minor compacted. This iterator is designed to manage this behind the scene.

        
        SortedKeyValueIterator<Key,Value> iter;
        
        if (options.isolated) {
          if (isolatedIter == null)
            isolatedIter = new SourceSwitchingIterator(dataSource, true);
          else
            isolatedDataSource.fileManager.reattach();
          iter = isolatedIter;
        } else {
          iter = new SourceSwitchingIterator(dataSource, false);
        }
        
        results = nextBatch(iter, range, options.num, options.columnSet);
        
        if (results.results == null) {

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        SortedKeyValueIterator<Key,Value> iter;


        if (options.isolated) {
          if (isolatedIter == null)
            isolatedIter = new SourceSwitchingIterator(dataSource, true);
          else
            isolatedDataSource.fileManager.reattach();
          iter = isolatedIter;
        } else {
          iter = new SourceSwitchingIterator(dataSource, false);
        }


        results = nextBatch(iter, range, options.num, options.columnSet);


        if (results.results == null) {

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    ScanDataSource dataSource = new ScanDataSource(authorizations, this.defaultSecurityLabel, columns, ssiList, ssio, interruptFlag);


    LookupResult result = null;


    try {
      SortedKeyValueIterator<Key,Value> iter = new SourceSwitchingIterator(dataSource);
      result = lookup(iter, ranges, columns, results, maxResultSize);
      return result;
    } catch (IOException ioe) {
      dataSource.close(true);
      throw ioe;

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    if (deleted)
      throw new IllegalStateException("Can not obtain iterator after map deleted");
    
    int mc = kvCount.get();
    MemoryDataSource mds = new MemoryDataSource();
    SourceSwitchingIterator ssi = new SourceSwitchingIterator(new MemoryDataSource());
    MemoryIterator mi = new MemoryIterator(new PartialMutationSkippingIterator(ssi, mc));
    mi.setSSI(ssi);
    mi.setMDS(mds);
    activeIters.add(mi);
    return mi;

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        String filename = getReservedReadeFilename(reader);
        InterruptibleIterator iter;
        if (detachable) {
          FileDataSource fds = new FileDataSource(filename, reader);
          dataSources.add(fds);
          SourceSwitchingIterator ssi = new SourceSwitchingIterator(fds);
          iter = new ProblemReportingIterator(tablet.getTableId().toString(), filename, continueOnFailure, ssi);
        } else {
          iter = new ProblemReportingIterator(tablet.getTableId().toString(), filename, continueOnFailure, reader);
        }
        DataFileValue value = files.get(new FileRef(filename));

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    if (deleted)
      throw new IllegalStateException("Can not obtain iterator after map deleted");
    
    int mc = mutationCount.get();
    MemoryDataSource mds = new MemoryDataSource();
    SourceSwitchingIterator ssi = new SourceSwitchingIterator(new MemoryDataSource());
    MemoryIterator mi = new MemoryIterator(new PartialMutationSkippingIterator(ssi, mc));
    mi.setSSI(ssi);
    mi.setMDS(mds);
    activeIters.add(mi);
    return mi;

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    ScanDataSource dataSource = new ScanDataSource(authorizations, this.defaultSecurityLabel, columns, ssiList, ssio, interruptFlag);
    
    LookupResult result = null;


    try {
      SortedKeyValueIterator<Key,Value> iter = new SourceSwitchingIterator(dataSource);
      result = lookup(iter, ranges, columns, results, maxResultSize);
      return result;
    } catch (IOException ioe) {
      dataSource.close(true);
      throw ioe;

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        SortedKeyValueIterator<Key,Value> iter;
        
        if (options.isolated) {
          if (isolatedIter == null)
            isolatedIter = new SourceSwitchingIterator(dataSource, true);
          else
            isolatedDataSource.fileManager.reattach();
          iter = isolatedIter;
        } else {
          iter = new SourceSwitchingIterator(dataSource, false);
        }
        
        results = nextBatch(iter, range, options.num, options.columnSet);
        
        if (results.results == null) {

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        String filename = getReservedReadeFilename(reader);
        InterruptibleIterator iter;
        if (detachable) {
          FileDataSource fds = new FileDataSource(filename, reader);
          dataSources.add(fds);
          SourceSwitchingIterator ssi = new SourceSwitchingIterator(fds);
          iter = new ProblemReportingIterator(tablet.getTableId().toString(), filename, continueOnFailure, ssi);
        } else {
          iter = new ProblemReportingIterator(tablet.getTableId().toString(), filename, continueOnFailure, reader);
        }

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    if (deleted)
      throw new IllegalStateException("Can not obtain iterator after map deleted");
    
    int mc = kvCount.get();
    MemoryDataSource mds = new MemoryDataSource();
    SourceSwitchingIterator ssi = new SourceSwitchingIterator(new MemoryDataSource());
    MemoryIterator mi = new MemoryIterator(new PartialMutationSkippingIterator(ssi, mc));
    mi.setSSI(ssi);
    mi.setMDS(mds);
    activeIters.add(mi);
    return mi;

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org.apache.accumulo.core.data.Key

org.apache.accumulo.core.data.Range

org.apache.accumulo.core.data.Value

org.apache.accumulo.core.iterators.system.SourceSwitchingIteratorTest

org.apache.accumulo.server.tabletserver.FileManager$ScanFileManager

org.apache.accumulo.server.tabletserver.InMemoryMap

org.apache.accumulo.server.tabletserver.Tablet

org.apache.accumulo.server.tabletserver.Tablet$Scanner

org.apache.accumulo.tserver.FileManager$ScanFileManager

org.apache.accumulo.tserver.InMemoryMap

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