In my traces, I did not see any traces from client to either master or
regionserver. I have tried both deployment, pseudo-distributed on one
machine, and full-distributed on three machines (one client, one as hmaster
and zk, and one as regionserver). It only shows the following four spans in
my trace.
Not sure if it matters, but my hbase cluster (for testing purpose) has only
one data item. Does it mean the data may only exist on zookeeper?...
============================
{"TraceID":7257699385989462904,"SpanID":7302065526441692199,"ParentID":3479247883930615740,"ProcessID":"Executable","Start":1407995865229,"Stop":1407995865595,"Description":"RecoverableZookeeper.exists","KVAnnotations":{},"TLAnnotations":[]}
{"TraceID":7257699385989462904,"SpanID":1531433462825976451,"ParentID":3479247883930615740,"ProcessID":"Executable","Start":1407995865598,"Stop":1407995865676,"Description":"RecoverableZookeeper.getData","KVAnnotations":{},"TLAnnotations":[]}
{"TraceID":7257699385989462904,"SpanID":6733360713454706168,"ParentID":3479247883930615740,"ProcessID":"Executable","Start":1407995865955,"Stop":1407995866024,"Description":"RecoverableZookeeper.getData","KVAnnotations":{},"TLAnnotations":[]}
{"TraceID":7257699385989462904,"SpanID":3479247883930615740,"ParentID":477902,"ProcessID":"Executable","Start":1407995864542,"Stop":1407995866420,"Description":"Gets","KVAnnotations":{},"TLAnnotations":[]}
============================
On Sat, Aug 9, 2014 at 11:48 AM, Masatake Iwasaki <
[email protected]> wrote:
> > The traces I got is mostly the interactions between zookeeper and
> > Hbase-client thread.
>
> Can you see at least one trace from client to master or regionserver?
> If so, it's working correctly.
>
>
>
> > I am asking how I can enable the trace collection on the server side,
> like
> > RPC involving HMaster, and Regionserver. Or does the current hbase-trace
> > support such server-side tracing? and how deep (thread-level or
> RPC-level)
> > the hbase-trace is?
>
> Tracing is based on RPC.
> Downstream RPCs from server processing your traced request to another
> server are traced.
> Also you can add custom tracing points.
> grepping "startSpan" in HBase source code shows you them.
> Not so many in released server code.
>
>
> (8/9/14, 8:01), yun peng wrote:> Hi,
>
> > I am using HTracing-0.3.4 with LocalFileSpanReceiver in
> HBase-0.99-SNAPSHOT
> > (in branch1 as of now). I have enabled the tracing configuration (i.e. in
> > hbase-site.xml) at both client and server side. I am running HBase in a
> > psuedo-dstributed mode, that is, 2 region servers, one hmaster and one
> > zookeeper, as different processes but in one machine.
> >
> > The traces I got is mostly the interactions between zookeeper and
> > Hbase-client thread.
> > I am asking how I can enable the trace collection on the server side,
> like
> > RPC involving HMaster, and Regionserver. Or does the current hbase-trace
> > support such server-side tracing? and how deep (thread-level or
> RPC-level)
> > the hbase-trace is?
>
--
Best,
Yun
