Re: summer-coding Digest, Vol 19, Issue 18

[Sarup Banskota]

On Sat, Apr 27, 2013 at 5:31 PM, <
[e-mail]> wrote:
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> Today's Topics:
> Recommendation letter inquiry (Sarup Banskota)
> Fwd: [GSoC] Implement a Cassandra/NoSQL Connector or
> Translator for    GlusterFS (Jilin Xpd)
> Student Application Submission - Updates (Buddhike Kurera)
>
> Message: 1
> Date: Fri, 26 Apr 2013 20:08:06 +0530
> From: Sarup Banskota 
> To: Buddhike Kurera 
> Cc: [e-mail], Emily Dirsh
>         
> Subject: Recommendation letter inquiry
> Message-ID:
>         <
> [e-mail]>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi Buddhike,
>
> I had a word with one of my professors regarding the recommendation letter.
> According to my University rules, any recommendation letters should be
> uploaded/emailed directly by the professor to the concerned people. I also
> believe this system is fair, because students wouldn't have to play around
> with the letter once it is sent to them by the profs. :)
>
> So it might so happen that I will forward him your email ID, and my
> recommendation letter might land to your email through him. Is that ok? Of
> course, I will make sure he makes it clear it is meant for me.
>
> Thank you,
> Sarup Banskota
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> Message: 2
> Date: Sat, 27 Apr 2013 09:48:33 +0800
> From: Jilin Xpd 
> To: [e-mail],
>         [e-mail]
> Subject: Fwd: [GSoC] Implement a Cassandra/NoSQL Connector or
>         Translator for  GlusterFS
> Message-ID:
>         <CAJ46KbXPmT=
> [e-mail]>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi, all,
>
> I'm applying for the GSOC project "*Implement a Cassandra/NoSQL Connector
> or Translator for GlusterFS*".
> Since I have completed my GSOC proposal, I would like to post it here, any
> sugggestions will be welcome.
>
> Here is my application in fedora project wiki:
> https://fedoraproject.org/wiki/GSOC_2013/Student_Application_Jilinxpd
>
> Here is my application with *proposal *in google-melange:
>
> https://google-melange.appspot.com/gsoc/proposal/review/google/gsoc2013/jili...
>
> Best regards,
> Peidong
>
> ---------- Forwarded message ----------
> From: Jilin Xpd 
> Date: 2013/4/25
> Subject: Fwd: [GSoC] Implement a Cassandra/NoSQL Connector or Translator
> for GlusterFS
> To: [e-mail], Anand Babu Periasamy ,
> [e-mail]
> Cc: Buddhike Kurera
>
> Dear mentors,
>
> I'm Peidong, the guy applying for the GSOC project "*Implement a
> Cassandra/NoSQL Connector or Translator for GlusterFS*".
> I have finished my proposal, I hope you can help review it, thanks very
> much!
>
> Here is my application in fedora project wiki:
> https://fedoraproject.org/wiki/GSOC_2013/Student_Application_Jilinxpd
>
> Here is my application with *proposal *in google-melange:
>
> https://google-melange.appspot.com/gsoc/proposal/review/google/gsoc2013/jili...
>
> Hi Peidong,

I think one of the header still says "GSoC 2012", so you might want to
change it to GSoC 2013. :) I've noticed that you have fixed that in the
wiki.

Good luck.
> Best Regards,
> Peidong
>
> ---------- Forwarded message ----------
> From: Jilin Xpd 
>  Date: 2013/4/23
> Subject: Fwd: [GSoC] Implement a Cassandra/NoSQL Connector or Translator
> for GlusterFS
> To: [e-mail], [e-mail], [e-mail]
> Cc: Buddhike Kurera
>
> Dear mentors,
>
> I'm a student willing to apply for the GSOC project "*Implement a
> Cassandra/
> NoSQL Connector or Translator for GlusterFS*".
> I have contacted with Mr Walker before, he hasn't reply yet.
> As I'm now writing my proposal, I have some questions about this project.
> Would you kindly help me solving my questions? Thanks very much!
>
> My questions is as follows:
>
> (1) As I understand it, the project is to write a storage translator for
> GlusterFS, so that GlusterFS can use Cassandra as its backend storage.
> One of the benefits is that legacy applications which are incompatible with
> NoSQL can now store key-value pairs into Cassandra indirectly.
> Am I right?
>
> (2) Since the users will only store key-value pairs as a file into our
> system, they may not use directory, file attribute and extended file
> attribute, do we need to provide fops to support these features?
> If we do, then as for the directory, I find it not very difficult to
> support it, since directory can map to the super column and column family
> in Cassandra.
>
> That's all my questions. Thanks for your time!
>
> I'm still designing and writing my proposal, I will post to your all as
> soon as I finish.
>
> Best regards,
> Peidong
>
> ---------- Forwarded message ----------
> From: Jilin Xpd 
> Date: 2013/4/22
> Subject: [GSoC] Implement a Cassandra/NoSQL Connector or Translator for
> GlusterFS
> To: [e-mail]
>
> Hi, Mr Walker,
>
> I'm Peidong Xie, a third year master student from Institute of Software,
> Chinese Academy of Sciences.
>
> Sorry to communicate with you so late, I want to express my interest in the
> idea "*Implement a Cassandra/NoSQL Connector or Translator for GlusterFS*
> ".
>
> I have read the documents in the GlusterFS website, from where I got the
> knowledge of GlusterFS architecture and the way of writing translators.
> Also, I roughly read the code of posix translator and bdb translator, and
> figured out the skeleton of a storage translator.
>
> I noticed that GlusterFS had bdb as one of its storage backends, but it's
> obsoleted. To implement a Cassandra translator for Glusterfs, I think the
> bdb translator is a good reference.
> Cassandra doesn't provide native interface for C, there is a C++ client (
> libQtCassandra) which involves 3rd party libraries, so I think it's better
> to use raw Thrift API in Glusterfs.
>
> I have participated in some projects, most of my work is related with file
> system:
>
> (1) In 2011, I together with another student, developed a shared fs based
> on FUSE, it's used to store libvirt checkpoint file and image file, then
> multiple VMs could read/write a checkpoint or image  simultaneously. The
> key idea is parting the whole file into small blocks and cache them in
> memory, so that VMs could share the file blocks. COW is used to make sure a
> VM's write won't  influence others.
>
> (2) During last year's GSoC, I made the smbfs(CIFS client) in
> illumossupport
> mmap. Firstly, I implemented mmap with block i/o, the main work it to
> implement the VFS interfaces, such as smbfs_mmap, smbfs_getpage,
> smbfsputpage. Secondly, I add page cache support to file i/o, mainly
> modified smbfs_read, smbfs_write. With mmap, smbfs could cache file in
> memory and reduce the i/o request over the wire, so the efficiency of i/o
> increases.
>
> (3) In last year, I spent some time porting ecryptfs-utils to
> RedFlagLinux, making it work with
> ecryptfs, to support encrypted home directory.
>
> Currently, I concentrate on the storage issues in big data. I have done
> study on some distributed systems such as hdfs, hbase, mongodb, cassandra,
> and storage engines such as bdb and leveldb.
>
> I hope my project experience and background knowledge could help in
> "Implement a Cassandra/NoSQL Connector or Translator for GlusterFS ".
> I haven't finished my proposal yet, I will finish it in one or two days.
>
> Best regards,
> Peidong
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> Message: 3
> Date: Sat, 27 Apr 2013 10:45:12 +0530
> From: Buddhike Kurera 
> To: "[e-mail]"
>         
> Subject: Student Application Submission - Updates
> Message-ID:
>         <CAMkiuSudKVxbQvOvM5AZRfKhz=
> [e-mail]>
> Content-Type: text/plain; charset="utf-8"
>
> Hi
>
> At the moment we have received following student applications, covering
> Fedora student application guideline,
>
> https://fedoraproject.org/wiki/GSOC_2013/Student_Application_Sarupbanskota
> https://fedoraproject.org/wiki/GSOC_2013/Student_Application_Bttalic
>
> We have asked more info from some students who posted incomplete
> applications.
>
> Please complete the application process asap and let us know.
>
> --
> Regards,
> Buddhike Chandradeepa Kurera (bckurera)
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> End of summer-coding Digest, Vol 19, Issue 18