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From Eric Charles <e...@apache.org>
Subject Re: HMaster acts as HRegionServer when run on a single node
Date Sat, 03 May 2014 17:51:57 GMT
Thx Ted, I missed that one - This mitigates my surprise.

I built the hbase book (mvn site), and it seems to me that it is not
documented. Is it the case? I also remember some changes on the -ROOT-
usage and I wonder if the trunk documentation reflects those change?

Cheers, Eric


On 05/03/2014 06:08 PM, Ted Yu wrote:
> Eric:
> Take a look at HBASE-10569.
> 
> Cheers
> 
> 
> On Sat, May 3, 2014 at 5:14 AM, Eric Charles <eric@apache.org> wrote:
> 
>> Hello,
>>
>> A few (3?) months ago, trunk was still acting the classical way in case
>> of a single HBase node relying on HDFS (see config in [1]), meaning that
>> both HMaster and HRegionServer were needed (clearly visible via ps -ef
>> or jps).
>>
>> Today, it seems that the HMaster acts also as HRegionServer.
>> HBase works fine with a single process and launching a region server
>> returns a "java.net.BindException: Address already in use", which
>> confirms that HMaster now also serves the HRegion ports.
>>
>> For the Web UI, I was used to go by default to http://localhost:60010
>> for the master and http://localhost:60030 Now I need to go to
>> http://localhost:16010 which returns a 302 HTTP Response redirecting me
>> to http://localhost:16030/rs-status showing the
>>
>> I can find where the default ports were changed [2].
>>
>> Apart from that, the HBase console works fine and the HBase files are
>> created in HDFS.
>>
>> Is this the expected behavior? Can someone point me to those recent
>> changes (JIRA, mailing list...)?
>>
>> I want to double check as I am now working on HBASE-10336 "Remove
>> deprecated usage of Hadoop HttpServer in InfoServer", I first want to
>> assess the normal behavior before testing the changes.
>>
>> Thx,
>>
>> Eric
>>
>> [1]
>>
>> https://raw.githubusercontent.com/datalayer/io.datalayer/master/hbase/server/src/main/resources/hbase-site.xml
>>
>> [2]
>>
>> https://github.com/apache/hbase/commit/4430d10759f5e6392a0bd36395ba4f6bbc3bc94f
>>
> 

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