Supervisor/supervisor

I/O operation on closed file

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#984 创建于 2017年8月24日

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 (3 评论) (0 反应) (0 负责人)Python (7,941 star) (1,233 fork)batch import
help wantedlogging

描述

Hello.

Using supervisor 3.3.3 on OS X, installed through brew.

The system seems to work 'ok'; but the error file is a torrent of errors such as these (below). Any hints appreciated.

2017-08-24 13:34:04,513 CRIT uncaptured python exception, closing channel <POutputDispatcher at 4318273408 for <Subprocess at 4316929848 with name central-worker-engine-2 in state RUNNING> (stdout)> (<type 'exceptions.ValueError'>:I/O operation on closed file [/usr/local/Cellar/supervisor/3.3.3/libexec/lib/python2.7/site-packages/supervisor/supervisord.py|runforever|227] [/usr/local/Cellar/supervisor/3.3.3/libexec/lib/python2.7/site-packages/supervisor/dispatchers.py|handle_read_event|232] [/usr/local/Cellar/supervisor/3.3.3/libexec/lib/python2.7/site-packages/supervisor/dispatchers.py|record_output|166] [/usr/local/Cellar/supervisor/3.3.3/libexec/lib/python2.7/site-packages/supervisor/dispatchers.py|_log|142] [/usr/local/Cellar/supervisor/3.3.3/libexec/lib/python2.7/site-packages/supervisor/loggers.py|info|275] [/usr/local/Cellar/supervisor/3.3.3/libexec/lib/python2.7/site-packages/supervisor/loggers.py|log|293] [/usr/local/Cellar/supervisor/3.3.3/libexec/lib/python2.7/site-packages/supervisor/loggers.py|emit|186] [/usr/local/Cellar/supervisor/3.3.3/libexec/lib/python2.7/site-packages/supervisor/loggers.py|doRollover|211])

贡献者指南

技术栈
python
领域
backend
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Python basicsunderstanding of file I/O
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
50
研究方向
Investigate the traceback in the issue: supervisord.py line 227 calls runforever, dispatchers.py line 232 handle read event, line 166 record output, line 142 log, and loggers.py line 275 info, line 293 log, line 186 emit, line 211 doRollover. The error 'I/O operation on closed file' suggests a file handle is being used after close. Look at the log rotation logic (doRollover) and ensure it handles file closure correctly. Check if the issue is reproducible with current version. Review any linked issues or comments for context.