On Tue, Aug 15, 2017 at 12:38 PM, Andrew Purtell <[email protected]> wrote:
> Doc update to indicate HTrace is unfinished is fine. > > We could do this. Update jar and doc it as broke. > Phoenix uses HTrace to support query tracing. It "works". Nit: I didn't think this was htrace. It was an old version pulled into phoenix world where it lives storing to phoenix table reporting on phoenix-only spans. > A colleague made > a contribution to HDFS to fix a case where spans could get muddied around > the WAL. We are carrying that patch on top of 2.7 for the moment but IIRC > it's in 2.8. > > Removing all of our HBase level spans doesn't make sense to me when spans > at HDFS level will not be removed, nor at the Phoenix level. The spans in hbase are just hanging until they get the htrace-4 revamp and the dots get connected. > We hollow out > the middle. I think this is worse than leaving things at a half finished > state. At least in the half finished state it might get finished. > > Nod. > What are the most pressing issues? I'm up for supporting an "HTrace" get > well. I'll need your (community) help for getting patches into Hadoop if > need be. > > HTrace needs care and a viewer (zipkin I think now it has come back alive). HBase needs a couple of narratives wired through. Ditto HDFS. St.Ack > > On Tue, Aug 15, 2017 at 12:10 PM, Stack <[email protected]> wrote: > > > On Tue, Aug 15, 2017 at 11:22 AM, Andrew Purtell <[email protected]> > > wrote: > > > > > -1 to removing HTrace from HBase. > > > > > > Upgrade to the desired version, that would be fine. > > > > > > > > âtâ > > > > What you thinking Andrew? > > > > Trace is broke whether we upgrade or not. As is, we mislead. We give off > > the impression that hooking up hbase and hdfs via trace tells a story > about > > request traversals when it at best you'd get a wonky view. > > > > HTrace needs work. HBase and HDFS also need work before we can suggest to > > our users this system is viable debugging. > > > > What you reckon Andrew? > > Thanks, > > S > > > > > > > > > > > > > > On Tue, Aug 15, 2017 at 5:54 AM, Tamas Penzes <[email protected]> > > wrote: > > > > > > > Hi All, > > > > > > > > As far as I know the actual integration of HTrace 3.2 into HBase is > far > > > > from satisfying. > > > > > > > > This version of the library is old, buggy, not really maintained and > > the > > > > migration to version 4.x is quite hard ( > > > > https://issues.apache.org/jira/browse/HBASE-14451) and looks like > the > > > task > > > > is not getting much closer to the goal. > > > > > > > > This is why I think we should remove HTrace now and if we still want > to > > > > have some art of tracing (I think it would be useful) then start it > > from > > > > the baseline. > > > > I have created a ticket for this task: > > > > https://issues.apache.org/jira/browse/HBASE-18601 > > > > The removal could be quite fast and reach version 2.0.0 too. > > > > > > > > What do you all think? > > > > > > > > Thanks, Tamaas > > > > > > > > > > > > > > > > -- > > > Best regards, > > > Andrew > > > > > > Words like orphans lost among the crosstalk, meaning torn from truth's > > > decrepit hands > > > - A23, Crosstalk > > > > > > > > > -- > Best regards, > Andrew > > Words like orphans lost among the crosstalk, meaning torn from truth's > decrepit hands > - A23, Crosstalk >
