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From Tsz Wo Sze <szets...@yahoo.com>
Subject Re: [DISCUSS] Remove append?
Date Mon, 26 Mar 2012 20:55:47 GMT
> Just one comment: If we do decide to keep append in, we should get it
> to be actually stable and usable.  In my opinion, this should
> definitely happen before adding any new operations.

@Colin, append is currently stable and, of course, usable.  Many people in different organizations
have tested it in small and large scale.  However, it is not yet in a stable release and
so it is not yet heavy used.

> I agree that the notion of an immutable file is useful since it lets the
> system and tools optimize certain things.  A xerox-parc file system in the
> 80s had this feature that the system exploited. I would support adding the
> notion of an immutable file to Hadoop.

@Sanjay, I filed HDFS-3154.

@Eli and others, it turns out that the discussion is very useful!  Thanks.

Nicholas
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