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From Greg Bledsoe <g...@personal.com>
Subject Re: How big a jump is safe?
Date Wed, 03 Aug 2011 18:49:08 GMT
Nice.  Thanks for the quick response and pointer.


On 8/3/11 2:42 PM, "Jean-Daniel Cryans" <jdcryans@apache.org> wrote:

>It's safe, all the big installs I know are either on some heavily
>patched 0.89 or a late version of 0.90.
>You might want to do an export before upgrading, or a complete HDFS
>distcp, just for good measure.
>Also read this guide from the online book:
>On Wed, Aug 3, 2011 at 11:34 AM, Greg Bledsoe <greg@personal.com> wrote:
>> We have been running 0.20.3 in fully distributed mode for almost a year
>>now, and we are going to upgrade.  How big a jump is safe, and would
>>best practice going to 0.9x.y be to export, upgrade, format, import?
>> Thanks
>> Greg

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