Package cascading.flow

Examples of cascading.flow.FlowException

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      LOG.error( "unable to get remote counters, no cached values, throwing exception", exception.getCause() );

      if( exception.getCause() instanceof FlowException )
        throw (FlowException) exception.getCause();

      throw new FlowException( exception.getCause() );
      }
    catch( TimeoutException exception )
      {
      numTimeouts++;
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        {
        return getCounters( jobStatus );
        }
      catch( IOException exception )
        {
        throw new FlowException( "unable to get remote counter values" );
        }
      }
    };

    return futuresPool.submit( task );
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      reportIfLocal( throwable );

      if( throwable instanceof CascadingException )
        throw (CascadingException) throwable;

      throw new FlowException( "internal error during reducer configuration", throwable );
      }
    }
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      reportIfLocal( throwable );

      if( throwable instanceof CascadingException )
        throw (CascadingException) throwable;

      throw new FlowException( "internal error during reducer execution", throwable );
      }
    }
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      writer.close();
      }
    catch( IOException exception )
      {
      throw new FlowException( "unable to write step state to Hadoop FS: " + temp.getIdentifier() );
      }

    URI uri = new Path( statePath ).toUri();
    DistributedCache.addCacheFile( uri, conf );
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      stepStatePath = file;
      break;
      }

    if( stepStatePath == null )
      throw new FlowException( "unable to find step state from distributed cache" );

    LOG.info( "reading step state from local path: {}", stepStatePath );

    Hfs temp = new Lfs( new TextLine( new Fields( "line" ) ), stepStatePath.toString() );

    TupleEntryIterator reader = null;

    try
      {
      reader = temp.openForRead( new HadoopFlowProcess( jobConf ) );

      if( !reader.hasNext() )
        throw new FlowException( "step state path is empty: " + temp.getIdentifier() );

      return reader.next().getString( 0 );
      }
    catch( IOException exception )
      {
      throw new FlowException( "unable to find state path: " + temp.getIdentifier(), exception );
      }
    finally
      {
      try
        {
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      {
      return super.isSuccessful();
      }
    catch( NullPointerException exception )
      {
      throw new FlowException( "Hadoop is not keeping a large enough job history, please increase the \'mapred.jobtracker.completeuserjobs.maximum\' property", exception );
      }
    }
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      if( gatherPartitions == 0 )
        gatherPartitions = conf.getInt( FlowRuntimeProps.GATHER_PARTITIONS, 0 );

      if( gatherPartitions == 0 )
        throw new FlowException( getName(), "a default number of gather partitions must be set, see FlowRuntimeProps" );

      conf.setNumReduceTasks( gatherPartitions );
      }

    conf.setOutputKeyComparatorClass( TupleComparator.class );
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      {
      return runningJob.mapProgress();
      }
    catch( IOException exception )
      {
      throw new FlowException( "unable to get progress" );
      }
    }
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      {
      return runningJob.reduceProgress();
      }
    catch( IOException exception )
      {
      throw new FlowException( "unable to get progress" );
      }
    }
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Related Classes of cascading.flow.FlowException

  • cascading.cascade.Cascade
  • cascading.flow.hadoop.FlowMapper
  • cascading.flow.hadoop.FlowReducer
  • cascading.flow.hadoop.HadoopFlow
  • cascading.flow.hadoop.HadoopFlowStep
  • cascading.flow.hadoop.planner.HadoopFlowStepJob
  • cascading.flow.hadoop.ProcessFlow
  • cascading.flow.hadoop.stream.graph.HadoopMapStreamGraph
  • cascading.flow.hadoop.util.HadoopMRUtil
  • cascading.flow.hadoop.util.HadoopUtil
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