[Bug 266464] Re: Subscriber "disappears" after subscription

[Uli]

The bug was not completly fixed in Mailman 2.1.15.

self.__timestamp is set after the loading AND parsing of the file. With large files the parsing may
need 1-2 seconds and in the meantime a new file, but older then the self.__timestamp set after the parsing ist written:


(1) Nov 16 21:02:54 2016 (57765) Try-Load config file /var/lib/mailman/lists/XY/config.pck
-> Load

(2) Nov 16 21:02:54 2016 (57765) 1479326518 mtime(/var/lib/mailman/lists/XY/config.pck)
-> Check mtime

(3) Nov 16 21:02:54 2016 (57765) 0 (self.__timestamp)
-> self.__timestamp is not set -> Load-File

(4) Nov 16 21:02:54 2016 (57765) 1479326574 (Time before Load of config.pck)
-> Timestamp int(time.time()) before the loading of the pickle file.

(5) Nov 16 21:02:55 2016 (57765) 1479326575 (Time after Loading unpickling File = self.__timestamp)
-> Timestamp after the Loading of the pickle file. The unpickling needs some time due to large List
   with 200.000 subscribers The parsing needs 1 second, timestamps differ.
   
(6) Nov 16 21:02:55 2016 (57765) Try-Loaded config file /var/lib/mailman/lists/neuerscheinungen/config.pck
-> Reload/Check Pickle-File

(7) Nov 16 21:02:55 2016 (57765) 1479326574 mtime(/var/lib/mailman/lists/XY/config.pck) 
-> Check mtime (file is older than self.__timestamp), but nervertheless changed after the Loading
   in (5)

(8) Nov 16 21:02:55 2016 (57765) 1479326575 SelfTimestamp
-> Wrong Data saved

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https://bugs.launchpad.net/bugs/266464

Title:
  Subscriber "disappears" after subscription

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