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From Brian Jeltema <bdjelt...@gmail.com>
Subject Re: regions in transition
Date Tue, 22 Dec 2015 16:31:40 GMT
Thanks. Can I safely delete the ZK node?

> On Dec 22, 2015, at 11:29 AM, Ted Yu <yuzhihong@gmail.com> wrote:
> 
> From RegionListTmpl.jamon :
> 
> <%if (onlineRegions != null && onlineRegions.size() > 0) %>
> ...
> <%else>
>   <p>Not serving regions</p>
> </%if>
> 
> The message means that there was no region online on the underlying server.
> 
> FYI
> 
> On Tue, Dec 22, 2015 at 7:18 AM, Brian Jeltema <bdjeltema@gmail.com> wrote:
> 
>> Following up, if I look at the MBase Master UI in the Ambari console I see
>> links to
>> all of the region servers. If I click on those links, the Region Server
>> page comes
>> up and in the Regions section, is displays ‘Not serving regions’. I’m not
>> sure
>> if that means something is disabled, or it just doesn’t have any regions
>> to server.
>> 
>>> On Dec 22, 2015, at 6:19 AM, Brian Jeltema <bdjeltema@gmail.com> wrote:
>>> 
>>>> 
>>>> Can you pick a few regions stuck in transition and check related region
>>>> server logs to see why they couldn't be assigned ?
>>> 
>>> I don’t see anything in the region logs relating any regions.
>>> 
>>>> 
>>>> Which release were you using previously ?
>>> 
>>> HDP 2.1 -> HDP 2.2
>>> 
>>> So is it safe to stop HBase and delete the ZK node?
>>> 
>>>> 
>>>> Thanks
>>>> 
>>>> On Mon, Dec 21, 2015 at 3:54 PM, Brian Jeltema <bdjeltema@gmail.com>
>> wrote:
>>>> 
>>>>> I am doing a cluster upgrade to the HDP 2.2 stack. For some reason,
>> after
>>>>> the upgrade HBase
>>>>> cannot find any regions for existing tables. I believe the HDFS file
>>>>> system is OK. But looking at the ZooKeeper
>>>>> nodes, I noticed that many (maybe all) of the regions were listed in
>> the
>>>>> ZooKeeper
>>>>> /hbase-unsecure/region-in-transition node. I suspect this could be
>> causing
>>>>> a problem. Is it
>>>>> safe to stop HBase and delete that node?
>>>>> 
>>>>> Thanks
>>>>> Brian
>>> 
>> 
>> 


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