Examples of org.apache.howl.common.HowlException

org.apache.howl.common.HowlException
Class representing exceptions thrown by Howl.

    }


    public void append(final HowlFieldSchema hfs) throws HowlException{


      if(hfs == null || fieldSchemas == null){
        throw new HowlException("Attempt to append null HowlFieldSchema in HowlSchema.");
      }
      //TODO Addition of existing field should not be allowed in Schema.
      //Need to enforce that. For that to happen, field schema needs to implement Comparable.
      // Also, HowlSchema needs to implement Comparable.

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    }


    public void remove(final HowlFieldSchema howlFieldSchema) throws HowlException {


      if(!fieldSchemas.contains(howlFieldSchema)){
        throw new HowlException("Attempt to delete a non-existent column from Howl Schema: "+ howlFieldSchema);
      }


      fieldSchemas.remove(howlFieldSchema);
      fieldPositionMap.remove(howlFieldSchema);
      fieldNames.remove(howlFieldSchema.getName());

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    }


    private static void assertTypeInCategory(Type type, Category category) throws HowlException {
        Category typeCategory = Category.fromType(type);
        if (typeCategory != category){
            throw new HowlException("Type category mismatch. Expected "+category+" but type "+type+" in category "+typeCategory);
        }
    }

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    }


    private static void assertTypeNotInCategory(Type type, Category category) throws HowlException {
        Category typeCategory = Category.fromType(type);
        if (typeCategory == category){
            throw new HowlException("Type category mismatch. Expected type "+type+" not in category "+category+" but was so.");
        }
    }

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        // No checks for Create Table, since its not possible to compute location
        // here easily. So, it is especially handled in CreateTable post hook.
        break;


      default:
        throw new HowlException(ErrorType.ERROR_INTERNAL_EXCEPTION, "Unexpected token: "+ast.getToken());
      }
    } catch(HowlException e){
      throw new SemanticException(e);
    } catch (MetaException e) {
      throw new SemanticException(e);

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        }
      } catch(Exception e) {
        if( e instanceof HowlException ) {
          throw (HowlException) e;
        } else {
          throw new HowlException(ErrorType.ERROR_PUBLISHING_PARTITION, e);
        }
      }


      Path src = new Path(jobInfo.getLocation());
      FileSystem fs = src.getFileSystem(jobContext.getConfiguration());

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            //baseCommitter.cleanupJob failed, try to clean up the metastore
            client.dropPartition(tableInfo.getDatabaseName(),
                    tableInfo.getTableName(), values);
          } catch(Exception te) {
            //Keep cause as the original exception
            throw new HowlException(ErrorType.ERROR_PUBLISHING_PARTITION, e);
          }
        }


        if( e instanceof HowlException ) {
          throw (HowlException) e;
        } else {
          throw new HowlException(ErrorType.ERROR_PUBLISHING_PARTITION, e);
        }
      } finally {
        if( client != null ) {
          client.close();
        }

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     * @throws IOException
     */
    static List<String> getPartitionValueList(Table table, Map<String, String> valueMap) throws IOException {


      if( valueMap.size() != table.getPartitionKeys().size() ) {
          throw new HowlException(ErrorType.ERROR_INVALID_PARTITION_VALUES,
              "Table "
              + table.getTableName() + " has " +
              table.getPartitionKeys().size() + " partition keys, got "+
              valueMap.size());
      }


      List<String> values = new ArrayList<String>();


      for(FieldSchema schema : table.getPartitionKeys()) {
        String value = valueMap.get(schema.getName().toLowerCase());


        if( value == null ) {
          throw new HowlException(ErrorType.ERROR_MISSING_PARTITION_KEY,
              "Key " + schema.getName() + " of table " + table.getTableName());
        }


        values.add(value);
      }

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      if (fs.isFile(file)) {
        Path finalOutputPath = getFinalPath(file, src, dest);


        if (!fs.rename(file, finalOutputPath)) {
          if (!fs.delete(finalOutputPath, true)) {
            throw new HowlException(ErrorType.ERROR_MOVE_FAILED, "Failed to delete existing path " + finalOutputPath);
          }
          if (!fs.rename(file, finalOutputPath)) {
            throw new HowlException(ErrorType.ERROR_MOVE_FAILED, "Failed to move output to " + dest);
          }
        }
      } else if(fs.getFileStatus(file).isDir()) {
        FileStatus[] paths = fs.listStatus(file);
        Path finalOutputPath = getFinalPath(file, src, dest);

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    private Path getFinalPath(Path file, Path src,
                              Path dest) throws IOException {
      URI taskOutputUri = file.toUri();
      URI relativePath = src.toUri().relativize(taskOutputUri);
      if (taskOutputUri == relativePath) {
        throw new HowlException(ErrorType.ERROR_MOVE_FAILED, "Can not get the relative path: base = " +
            src + " child = " + file);
      }
      if (relativePath.getPath().length() > 0) {
        return new Path(dest, relativePath.getPath());
      } else {

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Related Classes of org.apache.howl.common.HowlException

org.apache.howl.cli.SemanticAnalysis.HowlSemanticAnalyzer

org.apache.howl.data.schema.HowlFieldSchema

org.apache.howl.data.schema.HowlSchema

org.apache.howl.mapreduce.HowlOutputCommitter

org.apache.howl.mapreduce.HowlOutputFormat

org.apache.howl.mapreduce.HowlRecordWriter

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