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Hadoop >> mail # general >> 0.20.2 HDFS incompatible with 0.20.1

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Re: 0.20.2 HDFS incompatible with 0.20.1
Owen O'Malley wrote:
> Correction. Pre-1.0, the 0.N to 0.N+1 is a major upgrade. After 1.0, 1.N
> to 1.N+1 is a minor. In both cases, X.Y.z to X.Y.z+1 is a patch release.
> I thought we had it documented somewhere, but can't find it.