I saw an article recently regarding life od LED lamps. As noted above the type of lamp housing will effect the life, especially if the LED lamps are enclosed and get hot. The next item was buying the least expensive LED amps as these typically skimp on internal components and heat sink materials resulting in short life. Without more info i would suggest getting name brand LEDs, most of these have a warranty/ We replaced all of the lamps in our house in 2013, and have only had 3 or 4 failures of the original CREE lamps. We changed several of the original fixtures and then installed new LED lamps and these have had a higher failure rate then the original CREE lamps, which are no longer available.
The other possibility is if this fixture is on a dimmer, and the LEDs are NOT rated for dimming, this may cause premature failure.
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Pennsylvania, for 60+ years, most recently, Allentown, now TV. 
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