hunk.code_window: from base64 import b64encode
   from builtins import str
   from collections import OrderedDict
   import copy
   import errno
   from future import standard_library
   import os
  
hunk.labels: keep keep keep keep keep replace keep keep
hunk.file_path: airflow/configuration.py
hunk.type: replace
file: #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  
  """Make xcom value column a large binary
  
  Revision ID: bdaa763e6c56
  Revises: cc1e65623dc7
  Create Date: 2017-08-14 16:06:31.568971
  
  """
  from alembic import op
  import dill
  import sqlalchemy as sa
  
  # revision identifiers, used by Alembic.
  revision = 'bdaa763e6c56'
  down_revision = 'cc1e65623dc7'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # There can be data truncation here as LargeBinary can be smaller than the pickle
      # type.
      # use batch_alter_table to support SQLite workaround
      with op.batch_alter_table("xcom") as batch_op:
          batch_op.alter_column('value', type_=sa.LargeBinary())
  
  
  def downgrade():
      # use batch_alter_table to support SQLite workaround
      with op.batch_alter_table("xcom") as batch_op:
          batch_op.alter_column('value', type_=sa.PickleType(pickler=dill))
  