yum update fail

I ran into a problem yesterday in updating my Fedora 19 installation: a yum transaction died in the middle of upgrading ~150 packages, and left as many duplicates in its wake. Here’s how to go about fixing such failures.

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The July 1 Leap Second Bug

As was reported by Wired.com, the interworkings between the Linux kernel, Java, and the GNU C library (glibc) failed to anticipate or accommodate for a one-second gap injected into UTC time by stepping backward one second at midnight on July 1, to keep time synchronized with the Earth’s rotation. Despite this being known beforehand and discussed at length in some circles, the bug quickly produced unexpected and devastating results to Internet and other computing infrastructure, including taking out much of Amazon’s server farm and services provided by many other well-known web enterprises.

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Wired.com: ‘Leap Second’ Bug Wreaks Havoc Across Web

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