MetricMutableHistogram and all ( The classes which were ports of hadoop's classes) have been removed. They are no longer used. However the ones hadoop supplies were very slow so instead we use MutableHistogram.
See: HBASE-15222 On Mon, Jun 20, 2016 at 5:19 AM, Lars George <[email protected]> wrote: > BTW, I am looking at 1.2 branch, though here the Hadoop one does > exactly the same as what the HBase one does. Where do I see the > difference? Master looks the same too. Are you referring to the > histogram classes? > > On Mon, Jun 20, 2016 at 1:36 PM, Lars George <[email protected]> > wrote: > > Ah thanks Andy. It seemed mostly a copy (with some internal > > modification). Now, where is that used at all? > > > > On Sun, Jun 19, 2016 at 7:06 PM, Andrew Purtell > > <[email protected]> wrote: > >> We have additional functionality that the Hadoop supplied one does not, > importantly the ability to dump counts by latency bucket rather than > percentile measures at the moment. The former can be used to calculate > mathematically meaningful percentile measures over the whole fleet and over > longer timescales, the latter cannot. > >> > >> > >>> On Jun 19, 2016, at 9:36 AM, Lars George <[email protected]> > wrote: > >>> > >>> Hi, > >>> > >>> As per https://issues.apache.org/jira/browse/HBASE-6409 we rolled our > >>> own class. Is that still needed? Since 2012 lot's has changed and we > >>> should have all in place to use the Hadoop supplied one? > >>> > >>> Just curious. > >>> > >>> Cheers, > >>> Lars >
