Please look at some of the work happening in HADOOP-9688, which is adding a unique UUID (16 bytes) for each RPC request. This is common to all Hadoop RPC, will be available in HDFS, YARN and MAPREDUCE. Please see the jira for more details. Reach out to me if you have any questions.
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 > -- http://hortonworks.com/download/
