def start(self, isMaster, environ={}, isLocal=False):
if self.started:
return
logger.debug("start env in %s: %s %s", os.getpid(), isMaster, environ)
self.isMaster = isMaster
self.isLocal = isLocal
if isMaster:
if os.environ.has_key('DPARK_WORK_DIR'):
root = os.environ['DPARK_WORK_DIR']
else:
root = '/tmp/dpark'
if not os.path.exists(root):
os.mkdir(root, 0777)
os.chmod(root, 0777) # because of umask
name = '%s-%s-%d' % (time.strftime("%Y%m%d-%H%M%S"),
socket.gethostname(), os.getpid())
self.workdir = os.path.join(root, name)
os.makedirs(self.workdir)
self.environ['WORKDIR'] = self.workdir
self.environ['COMPRESS'] = util.COMPRESS
else:
self.environ.update(environ)
if self.environ['COMPRESS'] != util.COMPRESS:
raise Exception("no %s available" % self.environ['COMPRESS'])
self.ctx = zmq.Context()
from cache import CacheTracker, LocalCacheTracker
if isLocal:
self.cacheTracker = LocalCacheTracker(isMaster)
else:
self.cacheTracker = CacheTracker(isMaster)
from shuffle import LocalFileShuffle, MapOutputTracker, LocalMapOutputTracker
LocalFileShuffle.initialize(isMaster)
if isLocal:
self.mapOutputTracker = LocalMapOutputTracker(isMaster)
else:
self.mapOutputTracker = MapOutputTracker(isMaster)
from shuffle import SimpleShuffleFetcher, ParallelShuffleFetcher
#self.shuffleFetcher = SimpleShuffleFetcher()
self.shuffleFetcher = ParallelShuffleFetcher(2)
from broadcast import Broadcast
Broadcast.initialize(isMaster)
self.started = True
logger.debug("env started")
