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Declarative Machine Learning
#!/usr/bin/env python3
#-------------------------------------------------------------
#
# 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.
#
#-------------------------------------------------------------
import os
import sys
from os.path import join
import glob
from functools import reduce
from utils_exec import subprocess_exec
# Utility support for all file system related operations
def create_dir_local(directory):
"""
Create a directory in the local fs
directory: String
Location to create a directory
"""
if not os.path.exists(directory):
os.makedirs(directory)
def write_success(time, path):
"""
Write SUCCESS file in the given directory
time: String
Time taken to execute the dml script
path: String
Location to write the SUCCESS file
"""
if 'data-gen' in path:
if path.startswith('hdfs') and len(time.split('.')) == 2:
full_path = join(path, '_SUCCESS')
cmd = ['hdfs', 'dfs', '-touchz', full_path]
subprocess_exec(' '.join(cmd))
else:
if len(time.split('.')) == 2:
full_path = join(path, '_SUCCESS')
open(full_path, 'w').close()
def check_SUCCESS_file_exists(path):
"""
Check SUCCESS file is present in the input path
path: String
Input folder path
action_mode : String
Type of action data-gen, train ...
return: Boolean
Checks if the file _SUCCESS exists
"""
if 'data-gen' in path:
if path.startswith('hdfs'):
full_path = join(path, '_SUCCESS')
cmd = ['hdfs', 'dfs', '-test', '-e', full_path]
return_code = os.system(' '.join(cmd))
if return_code == 0:
return True
else:
full_path = join(path, '_SUCCESS')
exist = os.path.isfile(full_path)
return exist
return False
def contains_dir(hdfs_dirs, sub_folder):
"""
Support for Lambda Function to check if a HDFS subfolder is contained by the HDFS directory
"""
if sub_folder in hdfs_dirs:
return True
else:
# Debug
# print('{}, {}'.format(sub_folder, hdfs_dirs))
pass
return False
def check_hdfs_path(path):
"""
Check if a path is present in HDFS
"""
cmd = ['hdfs', 'dfs', '-test', '-e', path]
return_code = subprocess_exec(' '.join(cmd))
if return_code != 0:
return sys.exit('Please create {}'.format(path))
def relevant_folders(path, algo, family, matrix_type, matrix_shape, mode):
"""
Finds the right folder to read the data based on given parameters
path: String
Location of data-gen and training folders
algo: String
Current algorithm being processed by this function
family: String
Current family being processed by this function
matrix_type: List
Type of matrix to generate dense, sparse, all
matrix_shape: List
Dimensions of the input matrix with rows and columns
mode: String
Based on mode and arguments we read the specific folders e.g data-gen folder or train folder
return: List
List of folder locations to read data from
"""
folders = []
for current_matrix_type in matrix_type:
for current_matrix_shape in matrix_shape:
if path.startswith('hdfs'):
if mode == 'data-gen':
sub_folder_name = '.'.join([family, current_matrix_type, current_matrix_shape])
cmd = ['hdfs', 'dfs', '-ls', path]
path_subdir = subprocess_exec(' '.join(cmd), extract='dir')
if mode == 'train':
sub_folder_name = '.'.join([algo, family, current_matrix_type, current_matrix_shape])
cmd = ['hdfs', 'dfs', '-ls', path]
path_subdir = subprocess_exec(' '.join(cmd), extract='dir')
path_folders = list(filter(lambda x: contains_dir(x, sub_folder_name), path_subdir))
else:
if mode == 'data-gen':
data_gen_path = join(path, family)
sub_folder_name = '.'.join([current_matrix_type, current_matrix_shape])
path_subdir = glob.glob(data_gen_path + '.' + sub_folder_name + "*")
if mode == 'train':
train_path = join(path, algo)
sub_folder_name = '.'.join([family, current_matrix_type, current_matrix_shape])
path_subdir = glob.glob(train_path + '.' + sub_folder_name + "*")
path_folders = list(filter(lambda x: os.path.isdir(x), path_subdir))
folders.append(path_folders)
folders_flat = reduce(lambda x, y: x + y, folders)
return folders_flat