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From Kevin Lyda <ke...@ie.suberic.net>
Subject Re: HBase 0.92.1 questions...
Date Tue, 16 Oct 2012 15:40:43 GMT
On Thu, Oct 11, 2012 at 6:03 PM, Jean-Daniel Cryans <jdcryans@apache.org> wrote:
> On Tue, Oct 9, 2012 at 11:51 AM, Kevin Lyda <kevin@ie.suberic.net> wrote:
>> In reading the docs I learned that hdck in 0.92.2 has some additional
>> -fix* options, and -fixAssignments and -fixMeta seem like they might
>> fix this. I also got the impression that one could run the 0.92.2
>> version of hdck on a 0.92.1 HBase - possibly needing to restart the
>> master server after it completes (or does the master server need to be
>> stopped, hdck run and then the master server brought up after
>> completion?).
> All you really need is a 0.92.2 client that runs 0.92.2, no need to
> restart anything.

Excellent, that worked great. All is better and a bunch of space was reclaimed.

>> It also appears that a rolling upgrade to 0.92.2 is possible - but it
>> says the hdck should be clean.
> Yes... if you do have multiple assignments it could make the rolling
> restart harder.

They're gone now so I'll work out time for a rolling upgrade.

> It's a different build profile that includes code with dependencies on
> the security-related classes in Hadoop, which are not present in
> versions like 0.20, 0.20-append, 0.21, 0.22, etc
>
> 0.96.0 will be the first HBase release that requires at least Hadoop
> 1.0, which means that we won't need two tarballs.

Is it a good idea to upgrade to those? Or is the security layer still in flux?

Kevin

-- 
Kevin Lyda
Dublin, Ireland
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