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Thoughts on bug 969327 - possible threading problem



https://bugzilla.redhat.com/show_bug.cgi?id=969327

I'm unable to reproduce this myself, but after much staring at the code
and the provided logs (and logs from my own successful runs) I'm worried
we may have a problem with hubQ.

Notice that in both sets of anaconda logs the "spoke is ready: ..." and
"setting <object> status to: ..." come in batches, right next to each
other. They are nowhere near the threads that send the messages, most
are happening after their associated threads are actually done.

This could be a logging artifact, maybe they just aren't being logged
until later for some reason. But since the reporters are seeing actual
problems I am suspicious that something is holding up hubQ and it is
processing them all at about the same time.

If you look at the successful run they all happen early. In the failed
run they are late, and something in their ordering triggers running
AnaExecuteStorageThread a second time which seems to be the source of
the actual error.

Even in the successful run they don't look the way I'd expect. For
example DatetimeSpoke being set ready should be near AnaDateTimeThread,
but it isn't -- even in the successful run it is after the thread
finishes running.

Anyone have any ideas for debugging this?

-- 
Brian C. Lane | Anaconda Team | IRC: bcl #anaconda | Port Orchard, WA (PST8PDT)

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