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From Sean Owen <>
Subject Re: Hadoop serialization compression and precision loss
Date Thu, 14 Jul 2011 14:49:42 GMT
Nope, it is just serializing with the Java primitive methods, and this
serializes an 8-byte double in 8 bytes as represented in memory.

No, the compression could not be lossy, or else it would quickly break

On Thu, Jul 14, 2011 at 3:40 PM, Dhruv Kumar <> wrote:
> Interesting, are there factors specific to Hadoop (not just subtleties of
> Java or the OS) which can affect accuracy and I should be concerned about?
> Also, Sequence File stores compressed key value pairs does it not? Is that
> compression lossy?

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