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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Programmatic HBase version detection/extraction
Date Wed, 12 Nov 2014 22:31:00 GMT
Java-wise, you can use this API in HBaseAdmin:

  ClusterStatus getClusterStatus() throws IOException;

ClusterStatus provides:

  public String getHBaseVersion() {

Cheers

On Wed, Nov 12, 2014 at 2:06 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> Otis:
> You can parse the output from "status 'detailed'" command - look for the
> line starting with 'version'
>
> I checked the output from /jmx but didn't find such information there. The
> version would appear in the classpath but that's not easy to parse.
>
> One note about "hbase version" is that it returns the version of HBase
> client was built with - not the version of the cluster the client is
> talking to.
>
> Cheers
>
> On Wed, Nov 12, 2014 at 1:49 PM, Otis Gospodnetic <
> otis.gospodnetic@gmail.com> wrote:
>
>> Hi Ted,
>>
>> Thanks, but I'm looking for something I can grab programmatically (not
>> manually), for example from a Java app.  Maybe there is some API that
>> exposes this information or an MBean?
>>
>> Here's the use case:
>> SPM monitors HBase <http://sematext.com/spm/>, but HBase MBeans and
>> metrics
>> have changed over time.
>> How will SPM agent know which MBeans to look for, which metrics to
>> extract,
>> and how to interpret values it extracts without knowing which version of
>> HBase it's monitoring?
>> It could try proming for some known MBeans and deduce HBase version from
>> that, but that feels a little sloppy.
>> Ideally, we'd be able to grab the version from some MBean and based on
>> that
>> extract metrics we know are exposed in that version of HBase.
>>
>> Thanks,
>> Otis
>> --
>> Monitoring * Alerting * Anomaly Detection * Centralized Log Management
>> Solr & Elasticsearch Support * http://sematext.com/
>>
>>
>> On Wed, Nov 12, 2014 at 4:41 PM, Ted Yu <yuzhihong@gmail.com> wrote:
>>
>> > Using hbase shell:
>> >
>> > hbase(main):002:0> status 'detailed'
>> > version 0.98.4.2-hadoop2
>> >
>> > Cheers
>> >
>> > On Wed, Nov 12, 2014 at 1:37 PM, Otis Gospodnetic <
>> > otis.gospodnetic@gmail.com> wrote:
>> >
>> > > Hi,
>> > >
>> > > Is there a way to detect which version of HBase one is running?
>> > > Is there an API for that, or a constant with this value, or maybe an
>> > MBean
>> > > or some other way to get to this info?
>> > >
>> > > Thanks,
>> > > Otis
>> > > --
>> > > Monitoring * Alerting * Anomaly Detection * Centralized Log Management
>> > > Solr & Elasticsearch Support * http://sematext.com/
>> > >
>> >
>>
>
>

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