Hi Biju and Masatake,
I have a similar problem for my client htrace spans. I am not able to see
the parent client span in my trace output.
I have enabled htrace logging on server side using the below configuration
in hbase-site.xml
<property>
<name>hbase.trace.spanreceiver.classes</name>
<value>org.cloudera.htrace.impl.LocalFileSpanReceiver</value>
</property>
<property>
<name>hbase.local-file-span-receiver.path</name>
<value>/tmp/Server_htrace.out</value>
</property>
On the client side, I maintain a different configuration file
hbase-client.xml
<property>
<name>hbase.trace.spanreceiver.classes</name>
<value>org.cloudera.htrace.impl.LocalFileSpanReceiver</value>
</property>
<property>
<name>hbase.local-file-span-receiver.path</name>
<value>/tmp/Client_htrace.out</value>
</property>
I am able to see the htrace spans when I start/close spans using the hbase
shell so I think server configuration is correct.
However, when I start and close span in my client side code, I see only the
server side span traces without the root parent span that is initiating the
server rpc calls.
Here is how I made changes to the client side code:
this.spanReceiverHost = SpanReceiverHost.getInstance(conf);
I have initialized the spanReceiverHost like above. The conf is
hbase-client.xml here.
Then before a "Get" call I have done a start and close of trace:
TraceScope ts = Trace.startSpan("*Gets*", Sampler.ALWAYS);
try {
result = getTable(table).get(g);
}
catch (IOException e) {
throw new DatabaseException("Error fetching data: "
+ e.getMessage());
}
finally {
if (ts != null) {
ts.close();
}
}
For all the gets I see spans from the server side but no span with "*Gets*"
in the description. I cannot make a graph out of the spans since it is
missing the parent span.
Am I missing some configuration? It will be great if someone could help me
on this. I have one region server, one master running in my environment and
I am using hbase-0.98.8, htrace-20.4.
Thanks a lot,
Priyanka
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