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From Keith Turner <ke...@deenlo.com>
Subject Re: Request for mentor for project on ACCUMULO-1197
Date Thu, 18 Jul 2013 11:26:54 GMT
I can mentor for 1256.  I would like to see that done for Accumulo 1.6.0.


On Thu, Jul 18, 2013 at 5:33 AM, Sreejith Ramakrishnan <
sreejith.code@gmail.com> wrote:

> Hey,
>
> I'm sooo interested in this Jira. But, Luciano (Community Development,
> Apache) told me I should proceed with some simpler Jiras for the time being
> since its my first involvement with open source. So I decided I'll work on
> 1197 after 2months which is when this programme ends.
>
> So, I was thinking about ACCUMULO-1256 or ACCUMULO-1198. These are
> relatively smaller projects. Can you or any experts be a mentor for me?
>
> [1] https://issues.apache.org/jira/browse/ACCUMULO-1256
> [2] https://issues.apache.org/jira/browse/ACCUMULO-1198
>
>
> On Thu, Jul 18, 2013 at 7:21 AM, Billie Rinaldi <billie.rinaldi@gmail.com
> >wrote:
>
> > It's unfortunate he's on vacation this week.  So, you could write the
> > proposal of what you think the integration will look like before talking
> to
> > him, but there are a couple of risks: maybe he won't want to work with
> > someone, or won't have time to do the part of the work you'd be
> integrating
> > into during the 3 months of your programme.
> >
> > If you're willing to take the risk, we'll be able to find mentors for you
> > on the Accumulo side.
> >
> > Billie
> > I got a reply from the HDFS list. Seems this person Andrew is actually
> > working on this Jira. Here's the email:
> >
> >
> >
> http://mail-archives.apache.org/mod_mbox/hadoop-hdfs-dev/201307.mbox/%3CCA%2BqbEUM_ps2Nihqh4d2c2hA6neXJw5Xep3ceMxqFajmL10Adrw%40mail.gmail.com%3E
> >
> >
> > On Thu, Jul 18, 2013 at 12:37 AM, Sreejith Ramakrishnan <
> > sreejith.code@gmail.com> wrote:
> >
> > > Thank you :) Alright. I'll put such an email and get back at the
> > earliest.
> > >
> > >
> > > On Thu, Jul 18, 2013 at 12:21 AM, Billie Rinaldi <
> > billie.rinaldi@gmail.com
> > > > wrote:
> > >
> > >> Both. You could also mention that it could be useful for HBase as
> well,
> > >> but
> > >> that you aren't planning to do the HBase integration as part of your
> > >> project.
> > >> On Jul 17, 2013 2:41 PM, "Sreejith Ramakrishnan" <
> > sreejith.code@gmail.com
> > >> >
> > >> wrote:
> > >>
> > >> > So, when I'm putting an email in the HDFS list, shall I cite
> > >> ACCUMULO-1197
> > >> > or HDFS-4680?
> > >> >
> > >> >
> > >> > On Thu, Jul 18, 2013 at 12:03 AM, Billie Rinaldi
> > >> > <billie.rinaldi@gmail.com>wrote:
> > >> >
> > >> > > I suspect people may be reluctant due to the unknown nature of
> > making
> > >> > > changes to HDFS.  Perhaps if you could find someone to agree
to be
> > >> your
> > >> > > mentor on the HDFS side, it would be easier to find an Accumulo
> > mentor
> > >> > for
> > >> > > the part of the project that involves integrating the HDFS changes
> > >> with
> > >> > > Accumulo.
> > >> > >
> > >> > > Billie
> > >> > >
> > >> > >
> > >> > > On Wed, Jul 17, 2013 at 11:23 AM, Sreejith Ramakrishnan <
> > >> > > sreejith.code@gmail.com> wrote:
> > >> > >
> > >> > > > Oh. I saw the ticket. I'll try that direction as well. Also,
> what
> > do
> > >> > you
> > >> > > > think are my odds at getting a mentor since its too close
to the
> > >> > > deadline?
> > >> > > >
> > >> > > > I'm still requesting mentorship since its a formality for
the
> > >> > programme.
> > >> > > > Still keeping my hopes up.
> > >> > > >
> > >> > > >
> > >> > > > On Wed, Jul 17, 2013 at 11:45 PM, Billie Rinaldi
> > >> > > > <billie.rinaldi@gmail.com>wrote:
> > >> > > >
> > >> > > > > I realize there isn't a lot of time before the deadline,
but
> if
> > >> you
> > >> > are
> > >> > > > > interested in submitting a patch to HDFS I would encourage
you
> > to
> > >> > > engage
> > >> > > > > with the HDFS community to see if they are interested
in such
> a
> > >> > feature
> > >> > > > to
> > >> > > > > increase the likelihood of your patch being accepted.
 Their
> dev
> > >> > > mailing
> > >> > > > > list is hdfs-dev@hadoop.apache.org.
> > >> > > > >
> > >> > > > > I found one reference to Dapper in the HDFS tickets,
> HDFS-4680.
> > >>  The
> > >> > > > ticket
> > >> > > > > isn't about tracing, but Todd Lipcon comments that
he's
> > >> experimented
> > >> > > with
> > >> > > > > adding tracing to Hadoop RPC and asks if people would
find
> that
> > >> > useful.
> > >> > > > > (There doesn't appear to be a reply.)
> > >> > > > >
> > >> > > > > Billie
> > >> > > > >
> > >> > > > >
> > >> > > > > On Wed, Jul 17, 2013 at 11:01 AM, Sreejith Ramakrishnan
<
> > >> > > > > sreejith.code@gmail.com> wrote:
> > >> > > > >
> > >> > > > > > I think its a good idea to modify HDFS and Accumulo
to
> support
> > >> > HTrace
> > >> > > > > since
> > >> > > > > > HBase has also started working in this direction.
The
> progress
> > >> made
> > >> > > > could
> > >> > > > > > benefit both projects. And also, HTrace follows
the Dapper
> > >> > > conventions.
> > >> > > > > >
> > >> > > > > > I'm not an expert. But from what I read in Google's
paper
> and
> > >> > what's
> > >> > > > > being
> > >> > > > > > provided in HTrace, we can modify HDFS instrumentation
to
> add
> > a
> > >> > > 64-bit
> > >> > > > > > span-id to the RPC when tracing is enabled. And
on the
> > receiver
> > >> > side,
> > >> > > > if
> > >> > > > > it
> > >> > > > > > receives a span-id, it shall also be traced with
both the
> > parent
> > >> > and
> > >> > > > > child
> > >> > > > > > nodes having the same trace-id.
> > >> > > > > >
> > >> > > > > > What do you think? Please do correct me if I'm
wrong.
> > >> > > > > >
> > >> > > > > > P.S: Also, the last date for application for the
mentoring
> > ends
> > >> on
> > >> > > 19th
> > >> > > > > > July. So, I request all the experts here to please
let me
> know
> > >> if
> > >> > > > you're
> > >> > > > > > ready to be a mentor. And I assure you, I won't
bug you too
> > >> much in
> > >> > > > your
> > >> > > > > > busy scheduler. It's a mandatory rule for the
ICFOSS
> programme
> > -
> > >> > > > > >
> > >> http://community.apache.org/mentoringprogramme-icfoss-pilot.html
> > >> > > > > >
> > >> > > > > >
> > >> > > > > > On Wed, Jul 17, 2013 at 6:01 PM, Keith Turner
<
> > keith@deenlo.com
> > >> >
> > >> > > > wrote:
> > >> > > > > >
> > >> > > > > > > On Wed, Jul 17, 2013 at 7:32 AM, Sreejith
Ramakrishnan <
> > >> > > > > > > sreejith.code@gmail.com> wrote:
> > >> > > > > > >
> > >> > > > > > > > Wouldn't modifying HDFS in any way mean
forking the
> > project?
> > >> > > > Wouldn't
> > >> > > > > > > that
> > >> > > > > > > > have problems in the long run?
> > >> > > > > > > >
> > >> > > > > > > >
> > >> > > > > > > Forking HDFS is not the way to go.  Getting
your ideas and
> > >> > patches
> > >> > > > > > accepted
> > >> > > > > > > by HDFS is the way to go.
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > >
> > >> > > > > > > >
> > >> > > > > > > > On Wed, Jul 17, 2013 at 12:04 AM, Sreejith
Ramakrishnan
> <
> > >> > > > > > > > sreejith.code@gmail.com> wrote:
> > >> > > > > > > >
> > >> > > > > > > > > Hey,
> > >> > > > > > > > >
> > >> > > > > > > > > I have an idea to tackle this Jira.
I've read the
> dapper
> > >> > paper
> > >> > > > and
> > >> > > > > > > > > currently examining the work done
in thrift. Shall I
> > make
> > >> a
> > >> > > > > detailed
> > >> > > > > > > post
> > >> > > > > > > > > here?
> > >> > > > > > > > >
> > >> > > > > > > > > I'm part of the ICFOSS Joint Mentoring
Programme. So
> if
> > >> > someone
> > >> > > > can
> > >> > > > > > > > please
> > >> > > > > > > > > be my mentor, I'll be happy to
work with you :)
> > >> > > > > > > > >
> > >> > > > > > > > > [1]
> > >> > > > >
> > http://community.apache.org/mentoringprogramme-icfoss-pilot.html
> > >> > > > > > > > >
> > >> > > > > > > > > Thank you,
> > >> > > > > > > > > Sreejith R
> > >> > > > > > > > >
> > >> > > > > > > > >
> > >> > > > > > > > > On Tue, Jul 16, 2013 at 8:46 AM,
German Gutierrez <
> > >> > > > > > > > gutierrezga00@gmail.com
> > >> > > > > > > > > > wrote:
> > >> > > > > > > > >
> > >> > > > > > > > >> On Jul 12, 2013 8:53 PM, "Keith
Turner" <
> > >> keith@deenlo.com>
> > >> > > > wrote:
> > >> > > > > > > > >> >
> > >> > > > > > > > >> > On Thu, Jul 11, 2013 at
11:47 AM, Ajay Bhat <
> > >> > > > > > a.ajay.bhat@gmail.com>
> > >> > > > > > > > >> wrote:
> > >> > > > > > > > >> >
> > >> > > > > > > > >> > > Thanks Keith. I am
looking into it now.
> > >> > > > > > > > >> > >
> > >> > > > > > > > >> > > Accumulo has done
Dapper design based tracing and
> > >> called
> > >> > > it
> > >> > > > > > > > >> Cloudtrace.
> > >> > > > > > > > >> I
> > >> > > > > > > > >> > > am not aware of the
ins and outs of this and
> would
> > >> like
> > >> > to
> > >> > > > > know
> > >> > > > > > > more
> > >> > > > > > > > >> > > indepth about it.
Can anyone help out here?
> > >> > > > > > > > >> > >
> > >> > > > > > > > >> >
> > >> > > > > > > > >> > Cloudtrace is an implementation
of the ideas
> > mentioned
> > >> in
> > >> > > the
> > >> > > > > > Dapper
> > >> > > > > > > > >> paper.
> > >> > > > > > > > >> >  Its only used by Accumulo
at this point.   The
> > reason
> > >> I
> > >> > > > > mentioned
> > >> > > > > > > the
> > >> > > > > > > > >> > HBase work is so you could
asses the status of that
> > >> work.
> > >> > >  You
> > >> > > > > > > should
> > >> > > > > > > > >> > determine if any other
work besides the HBase and
> > >> Accumulo
> > >> > > > > efforts
> > >> > > > > > > > >> exists.
> > >> > > > > > > > >> >
> > >> > > > > > > > >> > I can think of a few ways
to tackle this problem.
> > >> > > > > > > > >> >
> > >> > > > > > > > >> >  1. Modify HDFS to use
cloudtrace.  Cloudtrace is
> > >> > currently
> > >> > > > > > > > implemented
> > >> > > > > > > > >> on
> > >> > > > > > > > >> > top of thrift, HDFS does
not use thrift.
> > >> > > > > > > > >> >  2. Modify HDFS and Accumulo
to use HBase  tracing.
> > >> > > > > > > > >> >  3. Modify HDFS to support
hooks for tracing.  Make
> > >> > > cloudtrace
> > >> > > > > use
> > >> > > > > > > > these
> > >> > > > > > > > >> > hooks.
> > >> > > > > > > > >> >  4. Create completely
new tracing system
> > >> > > > > > > > >> >
> > >> > > > > > > > >> > What are your thoughts
on this project?  What do
> you
> > >> hope
> > >> > to
> > >> > > > > > > > accomplish?
> > >> > > > > > > > >> > What is your timeframe?
> > >> > > > > > > > >> >
> > >> > > > > > > > >> >
> > >> > > > > > > > >> > > I have checked out
the HBase trunk also.
> > >> > > > > > > > >> > >
> > >> > > > > > > > >> > >  Some additional
info about ASF ICFOSS: The
> > >> ASF-ICFOSS
> > >> > > > > > Programme [
> > >> > > > > > > > >> > > http://icfoss.org/mentor.html]
was conducted by
> > >> Luciano
> > >> > > > > > Resende [
> > >> > > > > > > > >> > > http://people.apache.org/~lresende]
on June
> > 21-23rd,
> > >> > 2013
> > >> > > > and
> > >> > > > > > as
> > >> > > > > > > > >> part of
> > >> > > > > > > > >> > > the Programme, students
are encouraged to take up
> > an
> > >> > > Apache
> > >> > > > > JIRA
> > >> > > > > > > as
> > >> > > > > > > > a
> > >> > > > > > > > >> > > project.
> > >> > > > > > > > >> > >
> > >> > > > > > > > >> > >
> > >> > > > > > > > >> > > On Thu, Jul 11, 2013
at 7:27 PM, Keith Turner <
> > >> > > > > keith@deenlo.com
> > >> > > > > > >
> > >> > > > > > > > >> wrote:
> > >> > > > > > > > >> > >
> > >> > > > > > > > >> > > > Some HBase guys
were also looking into doing
> > >> something
> > >> > > w/
> > >> > > > > > > tracing.
> > >> > > > > > > > >>  I
> > >> > > > > > > > >> am
> > >> > > > > > > > >> > > > not sure what
has been done, but it would be
> > >> useful to
> > >> > > > look
> > >> > > > > > into
> > >> > > > > > > > >> that.  I
> > >> > > > > > > > >> > > > linked HBASE-6449
to the Accumulo ticket.
> > >> > > > > > > > >> > > >
> > >> > > > > > > > >> > > >
> > >> > > > > > > > >> > > > On Wed, Jul
10, 2013 at 8:41 PM, Ajay Bhat <
> > >> > > > > > > a.ajay.bhat@gmail.com
> > >> > > > > > > > >
> > >> > > > > > > > >> > > wrote:
> > >> > > > > > > > >> > > >
> > >> > > > > > > > >> > > > > Hi all,
> > >> > > > > > > > >> > > > >
> > >> > > > > > > > >> > > > > I had attended
the ASF-ICFOSS workshop held
> in
> > >> June.
> > >> > > > > > > > >> > > > >
> > >> > > > > > > >
> > >> > http://community.apache.org/mentoringprogramme-icfoss-pilot.html
> > >> > > > > > > > >> > > > >
> > >> > > > > > > > >> > > > > I'd like
to take up this issue as a project.
> > >> > > > > > > > >> > > > >
> > >> https://issues.apache.org/jira/browse/ACCUMULO-1197
> > >> > > > > > > > >> > > > > Could someone
in the community act as a
> mentor
> > >> for
> > >> > > this
> > >> > > > > > > project?
> > >> > > > > > > > >> The
> > >> > > > > > > > >> > > > > process
of selection is very similar to GSoC.
> > >> > > > > > > > >> > > > >
> > >> > > > > > > > >> > > > > I've checked
out the source code and used
> > >> Accumulo.
> > >> > I
> > >> > > > hope
> > >> > > > > > to
> > >> > > > > > > > have
> > >> > > > > > > > >> > > made a
> > >> > > > > > > > >> > > > > formal
proposal by Saturday, July 13th. I'd
> be
> > >> happy
> > >> > > to
> > >> > > > > get
> > >> > > > > > > some
> > >> > > > > > > > >> advice
> > >> > > > > > > > >> > > > on
> > >> > > > > > > > >> > > > > how I could
get started on it, and also any
> > minor
> > >> > > > issues I
> > >> > > > > > > could
> > >> > > > > > > > >> work
> > >> > > > > > > > >> > > on
> > >> > > > > > > > >> > > > in
> > >> > > > > > > > >> > > > > the interim.
> > >> > > > > > > > >> > > > >
> > >> > > > > > > > >> > > > > Regards,
> > >> > > > > > > > >> > > > > Ajay
> > >> > > > > > > > >> > > > >
> > >> > > > > > > > >> > > >
> > >> > > > > > > > >> > >
> > >> > > > > > > > >>
> > >> > > > > > > > >
> > >> > > > > > > > >
> > >> > > > > > > >
> > >> > > > > > >
> > >> > > > > >
> > >> > > > >
> > >> > > >
> > >> > >
> > >> >
> > >>
> > >
> > >
> >
>

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