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Posted to user@hbase.apache.org by Otis Gospodnetic <ot...@gmail.com> on 2014/05/29 05:39:39 UTC

HBase (Compaction and Region) Event Listeners

Hi,

I spotted https://issues.apache.org/jira/browse/HBASE-11220 which looks
very handy for capturing some HBase events....

... but I was wondering if there is already something in HBase that would
allow one to listen for thing like compactions.... or any other important
HBase events?

Thanks,
Otis
--
Performance Monitoring * Log Analytics * Search Analytics
Solr & Elasticsearch Support * http://sematext.com/

Re: HBase (Compaction and Region) Event Listeners

Posted by Ted Yu <yu...@gmail.com>.

Otis:
In BaseRegionObserver, you can find these hooks:

  public void preCompactSelection(final
ObserverContext<RegionCoprocessorEnvironment> c,

      final Store store, final List<StoreFile> candidates, final
CompactionRequest request)

  public void postCompactSelection(final
ObserverContext<RegionCoprocessorEnvironment> c,

      final Store store, final ImmutableList<StoreFile> selected,
CompactionRequest request) {

  public InternalScanner
preCompact(ObserverContext<RegionCoprocessorEnvironment> e,

      final Store store, final InternalScanner scanner, final ScanType
scanType,

      CompactionRequest request) throws IOException {

And some more ...


On Wed, May 28, 2014 at 8:43 PM, Jean-Marc Spaggiari <
jean-marc@spaggiari.org> wrote:

> Hi Otis,
>
> Have you looked at coprocessors?
>
> http://hbase.apache.org/book/cp.html (Follow the links)
>
> There is also some being implemented for deletes trackers.
> https://issues.apache.org/jira/browse/HBASE-11054
>
> JM
>
>
> 2014-05-28 23:39 GMT-04:00 Otis Gospodnetic <ot...@gmail.com>:
>
> > Hi,
> >
> > I spotted https://issues.apache.org/jira/browse/HBASE-11220 which looks
> > very handy for capturing some HBase events....
> >
> > ... but I was wondering if there is already something in HBase that would
> > allow one to listen for thing like compactions.... or any other important
> > HBase events?
> >
> > Thanks,
> > Otis
> > --
> > Performance Monitoring * Log Analytics * Search Analytics
> > Solr & Elasticsearch Support * http://sematext.com/
> >
>

Re: HBase (Compaction and Region) Event Listeners

Posted by Jean-Marc Spaggiari <je...@spaggiari.org>.

Hi Otis,

Have you looked at coprocessors?

http://hbase.apache.org/book/cp.html (Follow the links)

There is also some being implemented for deletes trackers.
https://issues.apache.org/jira/browse/HBASE-11054

JM


2014-05-28 23:39 GMT-04:00 Otis Gospodnetic <ot...@gmail.com>:

> Hi,
>
> I spotted https://issues.apache.org/jira/browse/HBASE-11220 which looks
> very handy for capturing some HBase events....
>
> ... but I was wondering if there is already something in HBase that would
> allow one to listen for thing like compactions.... or any other important
> HBase events?
>
> Thanks,
> Otis
> --
> Performance Monitoring * Log Analytics * Search Analytics
> Solr & Elasticsearch Support * http://sematext.com/
>