| #!/usr/bin/env python |
| """ |
| 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 re |
| import math |
| import datetime |
| |
| from resource_management.core.shell import checked_call |
| |
| def calc_xmn_from_xms(heapsize_str, xmn_percent, xmn_max): |
| """ |
| @param heapsize_str: str (e.g '1000m') |
| @param xmn_percent: float (e.g 0.2) |
| @param xmn_max: integer (e.g 512) |
| """ |
| heapsize = int(re.search('\d+',heapsize_str).group(0)) |
| heapsize_unit = re.search('\D+',heapsize_str).group(0) |
| xmn_val = int(math.floor(heapsize*xmn_percent)) |
| xmn_val -= xmn_val % 8 |
| |
| result_xmn_val = xmn_max if xmn_val > xmn_max else xmn_val |
| return str(result_xmn_val) + heapsize_unit |
