[Mailman-Users] Messages got stuck in "in" queue due to one"bad"message

[Mark Sapiro]

Xueshan Feng wrote:

>Quoting Mark Sapiro <msapiro at value.net>:
>
>>> All four of them?
>
>Only 3:
>
>mailman:/var/lib/mailman/qfiles# ps -ef | grep Inco
>list     21394 21383  0 18:45 ?        00:00:17 /usr/bin/python
>/var/lib/mailman/bin/qrunner --runner=IncomingRunner:0:4 -s
>list     21395 21383  0 18:45 ?        00:00:13 /usr/bin/python
>/var/lib/mailman/bin/qrunner --runner=IncomingRunner:1:4 -s
>list     21396 21383  0 18:45 ?        00:00:15 /usr/bin/python
>/var/lib/mailman/bin/qrunner --runner=IncomingRunner:2:4 -s
>
>A these 3 remaining ones would not do the work?


You are processing the 'in' queue in 4 slices with 4 IncomingRunner
instances.

You do this by redefining or modifying the QRUNNERS list in mm_cfg.py.
The entry in the list for IncomingRunner is

    ('IncomingRunner', 4),

meaning that there will be four IncomingRunner instances processing
slices 0:4, 1:4, 2:4 and 3:4 (the 3:4 runner is missing above).

Slicing works by dividing the queue entry hash space into slices (2^n
in general, 4 in this case. Each slice has its own runner. A portion
of each queue entry's name (the part between '+' and '.pck') is a 20
byte hash of a pickle of the message + the list name + the time of
enqueueing expressed as 40 hex digits. In this case, the first quarter
of the hash space is processed by the 0:4 runner, the second quarter
by the 1:4 runner, etc. If one of the four runners isn't running, its
portion of the hash space will not be processed.

-- 
Mark Sapiro <msapiro at value.net>       The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan