Folks over at HBase would be interested in helping out. What does a mentor have to do? I poked around the icfoss link but didn't see list of duties (I've been know to be certified blind on occasion).
I am not up on the malleability of hdfs RPC; is it just a matter of adding the trace info to a pb header record or would it require more (Sanjay was saying something recently off-list that trace id is imminent -- but I've not done the digging)? St.Ack On Wed, Jul 17, 2013 at 1:44 PM, Sreejith Ramakrishnan < sreejith.c...@gmail.com> wrote: > Hey, > > I was originally researching options to work on ACCUMULO-1197. Basically, > it was a bid to pass trace functionality through the DFSClient. I discussed > with the guys over there on implementing a Google Dapper-style trace with > HTrace. The guys at HBase are also trying to achieve the same HTrace > integration [HBASE-6449] > > But, that meant adding stuff to the RPC in HDFS. For a start, we've to add > a 64-bit span-id to every RPC with tracing enabled. There's some more in > the original Dapper paper and HTrace documentation. > > I was told by the Accumulo people to talk with and seek help from the > experts at HDFS. I'm open to suggestions. > > Additionally, I'm participating in a Joint Mentoring Programme by Apache > which is quite similar to GSoC. Luciano Resende (Community Development, > Apache) is incharge of the programme. I'll attach a link. The last date is > 19th July. So, I'm pretty tensed without any mentors :( > > [1] https://issues.apache.org/jira/browse/ACCUMULO-1197 > [2] https://issues.apache.org/jira/browse/HDFS-4680 > [3] https://github.com/cloudera/htrace > [4] http://community.apache.org/mentoringprogramme-icfoss-pilot.html > [5] https://issues.apache.org/jira/browse/HBASE-6449 > > Thank you, > Sreejith R >
