ericm-db commented on code in PR #57685: URL: https://github.com/apache/spark/pull/57685#discussion_r3762445930
########## python/pyspark/sql/connect/local_server_pool.py: ########## @@ -0,0 +1,224 @@ +# +# 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. +# + +"""Filesystem-backed state storage for local Spark Connect server pools. + +This internal foundation owns the pool directory layout, locking, and JSON state-file access. +Member validation, claiming, and process lifecycle are layered on top in follow-up changes. +""" + +import contextlib +import json +import os +import shutil +from typing import Any, Dict, List, Optional, Tuple + + +class PoolDirectory: + """Path layout, file access, and the cross-process lock of one pool directory. + + Used as a context manager that holds the directory's exclusive lock:: + + with PoolDirectory() as directory: + ...read and write state files... Review Comment: Added -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
