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3bed0be1df
This patch introduces new abstractions and changes the way queries are run via the workload runner. A new class 'Workload' is introduced, which represents the notion of a workload in the performance framework (i.e, A set of query names mapped to query strings). The new workflow is: - run-workload acts as a driver. It accepts user parmaters for which queries to run and their execution strategy. It generates workload objects and passes them to the workload-runner. - The workload runner takes a workload, its execution parameters and generates a set of test vectors over which the workload is run iteratively. - A workload is executed by initialiazing a QueryExecutor for each query being run in a test vector. The workload executor is then responsible for execution and gathering results. - The execution details of every query being executed are are stored and returned to the driver (run-workload). Change-Id: Ia16360140d65e6733e534e823bc5d5614622ab5f Reviewed-on: http://gerrit.ent.cloudera.com:8080/3616 Reviewed-by: Taras Bobrovytsky <tbobrovytsky@cloudera.com> Tested-by: jenkins
105 lines
3.9 KiB
Python
105 lines
3.9 KiB
Python
#!/usr/bin/env python
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# Copyright (c) 2012 Cloudera, Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import imp
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import logging
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import os
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import pkgutil
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import sys
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PLUGIN_DIR = os.path.join(os.environ['IMPALA_HOME'], 'tests', 'benchmark', 'plugins')
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# Setup logging for this module.
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logging.basicConfig(level=logging.INFO, format='%(filename)s: %(message)s')
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LOG = logging.getLogger('plugin_runner')
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LOG.setLevel(level=logging.INFO)
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class PluginRunner(object):
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''' Loads user specified plugins, if found, and initializes them.
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Looks in /tests/plugins and searches each module for plugin_name. plugin_name
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is the name of the class that the user has used to implement a plugin. If the class
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is found, it is initialized and added to self.__plugins. If it's not found, an error
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message is logged and the plugin in not loaded.
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'''
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def __init__(self, plugin_infos):
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self._available_modules = self._get_plugin_modules()
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self._get_plugins_from_modules(plugin_infos)
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@property
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def plugins(self):
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return self._plugins
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def __getstate__(self):
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state = self.__dict__.copy()
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del state['_available_modules']
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return state
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def _get_plugin_modules(self):
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''' Gets all the modules in the directory and imports them'''
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modules = pkgutil.iter_modules(path=[PLUGIN_DIR])
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available_modules = []
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for loader, mod_name, ispkg in modules:
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yield __import__("tests.benchmark.plugins.%s" % mod_name, fromlist=[mod_name])
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def _get_plugins_from_modules(self, plugin_infos):
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'''Look for user specified plugins in the available modules.'''
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self._plugins = []
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plugin_names = []
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for module in self._available_modules:
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for plugin_info in plugin_infos:
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plugin_name, scope = self._get_plugin_info(plugin_info)
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plugin_names.append(plugin_name)
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if hasattr(module, plugin_name):
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self._plugins.append(getattr(module, plugin_name)(scope=scope.lower()))
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# The plugin(s) that could not be loaded are captured in the set difference
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# between plugin_names and self.__plugins
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plugins_found = [p.__name__ for p in self._plugins]
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LOG.debug("Plugins found: %s" % ', '.join(plugins_found))
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plugins_not_found = set(plugin_names).difference(plugins_found)
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# If the user's entered a plugin that does not exist, raise an error.
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if len(plugins_not_found):
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msg = "Plugin(s) not found: %s" % (','.join(list(plugins_not_found)))
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raise RuntimeError, msg
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def _get_plugin_info(self, plugin_info):
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info = plugin_info.split(':')
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if len(info) == 1:
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return info[0], 'query'
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elif len(info) == 2:
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return info[0], info[1]
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else:
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raise ValueError("Plugin names specified in the form <plugin_name>[:<scope>]")
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def print_plugin_names(self):
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for p in self._plugins:
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LOG.debug("Plugin: %s, Scope: %s" % (p.__name__, p.scope))
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def run_plugins_pre(self, context=None, scope=None):
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if len(self._plugins) == 0: return
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if context: context['scope'] = scope
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for p in self._plugins:
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if not scope or p.scope == scope.lower():
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LOG.debug('Running pre-hook for %s at scope %s' % (p.__name__, scope))
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p.run_pre_hook(context=context)
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def run_plugins_post(self, context=None, scope=None):
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if len(self._plugins) == 0: return
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for p in self._plugins:
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if not scope or p.scope == scope.lower():
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LOG.debug('Running post-hook for %s at scope %s' % (p.__name__, scope))
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p.run_post_hook(context=context)
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