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Handle failures from zookeeper_interest() #39

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eric opened this Issue · 0 comments

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@eric
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I started to notice these log messages happening in my logs from time to time:

[ERROR] (zkrb.c:834: errno: Bad file descriptor) select returned: -1

at a rate of hundreds per second.

In attempting to diagnose the problem, I deployed this additional error checking and found that it looks like we aren't handling failures from zookeeper_interest() properly.

When I ran the patch, I got this exception:

ext/c_zookeeper.rb:262:in `zkrb_iterate_event_loop': zookeeper_interest failed: -7: operation timeout (RuntimeError)

I'm not sure what the impact of having zookeeper_interest return ZOPERATIONTIMEOUT is, but it seems to me that it wouldn't be good.

I'm still investigating the correct behavior when we get a failure from zookeeper_interest().

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