Hi Adina,
I went through the vagrant file. And there is a line,
*# soft linking the files doesn't seem to work in tomcat, so we copy them
instead :(*
*sudo cp
rya.indexing.example-${RYA_EXAMPLE_VERSION}-distribution/dist/lib/*
/var/lib/tomcat7/webapps/openrdf-workbench/WEB-INF/lib/*
*sudo cp
rya.indexing.example-${RYA_EXAMPLE_VERSION}-distribution/dist/lib/*
/var/lib/tomcat7/webapps/openrdf-sesame/WEB-INF/lib/*
But I was unable to do so because I cannot find */dist/lib/* .*
Any guidelines about this is thoroughly appreciated.
Thank you!
On Mon, May 9, 2016 at 7:45 PM, Amila Wijayarathna <[email protected]
> wrote:
> Hi Adina,
>
> The files you mentioned are not existing in the directory.
> I will go through your guidelines and vagrant file.
>
> Thank you!
>
> On Mon, May 9, 2016 at 7:29 PM, Adina Crainiceanu <[email protected]> wrote:
>
>> Based on your error and the vagrant readme file, I think the OpenRDF
>> Workbench transformations are not installed.
>>
>> Try this - adapted for your computer instead of the vagrant VM:
>> "OpenRDF Workbench requires a set of "transformations" for listing Rya in
>> the OpenRDF Workbench Repository list. The transforms are in this
>> directory: /var/lib/tomcat7/webapps/openrdf-workbench/transformations/
>>
>> 1. Verify that this file exists: create-RyaAccumuloSail.xsl
>> 2. Verify that create.xsl has been updated for rya. (run: "cat
>> create.xsl | grep Rya" and make sure there's some stuff there.)
>>
>> If these files do note exists, open the vagrant file and look for the
>> line echo "Downloading Rya". Try working through those commands manually
>> on your Vagrant VM."
>>
>> In particular, the lines for "# Download and install new templates for
>> OpenRdf WorkBench" in the vagrant file might be the ones that you are
>> missing.
>>
>> Please make detailed notes of what you are doing, so we can reproduce the
>> process on a new machine - I'm tryiong to get an Amazon EC2 instance so we
>> can all have access to it.
>>
>>
>> Adina
>>
>>
>>
>>
>> On Mon, May 9, 2016 at 9:09 AM, Amila Wijayarathna <
>> [email protected]> wrote:
>>
>>> Hi Adina,
>>> As in the vagrant file i tried to connect Rya via OpenRDF workbench to
>>> insert data. When i create new repository in workbench i have chose the
>>> type. But there is no "Rya Accumulo Store" type to chose as in the
>>> vagrant file.
>>> Any idea about this is thoroughly appriciated.
>>>
>>> Thank you!
>>>
>>> On Sat, May 7, 2016 at 9:36 PM, Adina Crainiceanu <[email protected]>
>>> wrote:
>>>
>>>> Hi,
>>>>
>>>> The screen shot for the web.rya/sparqlQuery.jsp looks correct. You
>>>> should try to insert some data and see if you can query it back. You might
>>>> be able to do an insert and select through the web.rya interface, but I'm
>>>> not sure about the insert.
>>>>
>>>>
>>>> The easiest way to do insert is through the openRDF Workbench interface.
>>>> Look in the vagrant file to see how to set it up.
>>>> Look in the Readme file for the vagrant example to see how to load some
>>>> data
>>>> https://github.com/apache/incubator-rya/tree/develop/extras/vagrantExample/src/main/vagrant
>>>>
>>>> Once you have data, you should be able to use either the we.rya
>>>> interface or the openRDf workbench interface to query the data using a
>>>> sparql select query.
>>>>
>>>> Adina
>>>>
>>>> On Sat, May 7, 2016 at 8:37 AM, Amila Wijayarathna <
>>>> [email protected]> wrote:
>>>>
>>>>> Hi Adina,
>>>>>
>>>>> I changed some settings and restart tomcat server. And when I browse
>>>>> in to http://localhost:8080/web.rya/sparqlQuery.jsp , I got the
>>>>> following window.
>>>>>
>>>>> Am I doing it correctly? If it is, I would like to know how to proceed
>>>>> further.
>>>>>
>>>>>
>>>>> Thank you!
>>>>>
>>>>> On Sat, May 7, 2016 at 12:43 PM, Amila Wijayarathna <
>>>>> [email protected]> wrote:
>>>>>
>>>>>> Hi Adina,
>>>>>>
>>>>>> When I changed the Accumulo instance volume in accumulo site.xml , I
>>>>>> can successfully start accumulo and I think it will not a problem for
>>>>>> instance name, it is remaining the same. So after a restart my laptop I
>>>>>> started the hadoop, zookeeper and accumulo and got the following,
>>>>>>
>>>>>> amila@amila-X550LD:~$ ~/Installs/hadoop-2.7.2/sbin/start-dfs.sh
>>>>>> Starting namenodes on [localhost]
>>>>>> localhost: starting namenode, logging to
>>>>>> /home/amila/Installs/hadoop-2.7.2/logs/hadoop-amila-namenode-amila-X550LD.out
>>>>>> localhost: starting datanode, logging to
>>>>>> /home/amila/Installs/hadoop-2.7.2/logs/hadoop-amila-datanode-amila-X550LD.out
>>>>>> Starting secondary namenodes [0.0.0.0]
>>>>>> 0.0.0.0: starting secondarynamenode, logging to
>>>>>> /home/amila/Installs/hadoop-2.7.2/logs/hadoop-amila-secondarynamenode-amila-X550LD.out
>>>>>>
>>>>>> amila@amila-X550LD:~$ ~/Installs/zookeeper-3.4.8/bin/zkServer.sh
>>>>>> start
>>>>>> ZooKeeper JMX enabled by default
>>>>>> Using config: /home/amila/Installs/zookeeper-3.4.8/bin/../conf/zoo.cfg
>>>>>> Starting zookeeper ... STARTED
>>>>>>
>>>>>> amila@amila-X550LD:~$ ~/Installs/accumulo-1.6.4/bin/accumulo init
>>>>>> 2016-05-07 08:44:23,775 [init.Initialize] INFO : Hadoop Filesystem is
>>>>>> hdfs://localhost:9000
>>>>>> 2016-05-07 08:44:23,776 [init.Initialize] INFO : Accumulo data dirs
>>>>>> are [hdfs://localhost:9000/ACCUMULO]
>>>>>> 2016-05-07 08:44:23,776 [init.Initialize] INFO : Zookeeper server is
>>>>>> localhost:2181
>>>>>> 2016-05-07 08:44:23,776 [init.Initialize] INFO : Checking if
>>>>>> Zookeeper is available. If this hangs, then you need to make sure
>>>>>> zookeeper
>>>>>> is running
>>>>>> Instance name : AMILA
>>>>>> Enter initial password for root (this may not be applicable for your
>>>>>> security setup): *******
>>>>>> Confirm initial password for root: *******
>>>>>> 2016-05-07 08:45:35,904 [Configuration.deprecation] INFO :
>>>>>> dfs.replication.min is deprecated. Instead, use
>>>>>> dfs.namenode.replication.min
>>>>>> 2016-05-07 08:45:36,948 [Configuration.deprecation] INFO :
>>>>>> dfs.block.size is deprecated. Instead, use dfs.blocksize
>>>>>> 2016-05-07 08:45:37,903 [conf.AccumuloConfiguration] INFO : Loaded
>>>>>> class : org.apache.accumulo.server.security.handler.ZKAuthorizor
>>>>>> 2016-05-07 08:45:37,907 [conf.AccumuloConfiguration] INFO : Loaded
>>>>>> class : org.apache.accumulo.server.security.handler.ZKAuthenticator
>>>>>> 2016-05-07 08:45:37,911 [conf.AccumuloConfiguration] INFO : Loaded
>>>>>> class : org.apache.accumulo.server.security.handler.ZKPermHandler
>>>>>>
>>>>>> amila@amila-X550LD:~$
>>>>>> ~/Installs/accumulo-1.6.4/bin/start-all.shStarting monitor on localhost
>>>>>> WARN : Max open files on localhost is 1024, recommend 32768
>>>>>> Starting tablet servers .... done
>>>>>> Starting tablet server on localhost
>>>>>> WARN : Max open files on localhost is 1024, recommend 32768
>>>>>> 2016-05-07 08:46:05,553 [server.Accumulo] INFO : Attempting to talk
>>>>>> to zookeeper
>>>>>> 2016-05-07 08:46:05,711 [server.Accumulo] INFO : ZooKeeper connected
>>>>>> and initialized, attempting to talk to HDFS
>>>>>> 2016-05-07 08:46:05,844 [server.Accumulo] INFO : Connected to HDFS
>>>>>> Starting master on localhost
>>>>>> WARN : Max open files on localhost is 1024, recommend 32768
>>>>>> Starting garbage collector on localhost
>>>>>> WARN : Max open files on localhost is 1024, recommend 32768
>>>>>> Starting tracer on localhost
>>>>>> WARN : Max open files on localhost is 1024, recommend 32768
>>>>>>
>>>>>> amila@amila-X550LD:~/Downloads$ cd apache-tomcat-7.0.68
>>>>>> amila@amila-X550LD:~/Downloads/apache-tomcat-7.0.68$ ./bin/startup.sh
>>>>>> Using CATALINA_BASE: /home/amila/Downloads/apache-tomcat-7.0.68
>>>>>> Using CATALINA_HOME: /home/amila/Downloads/apache-tomcat-7.0.68
>>>>>> Using CATALINA_TMPDIR: /home/amila/Downloads/apache-tomcat-7.0.68/temp
>>>>>> Using JRE_HOME: /usr/local/java/jdk1.8.0_74/jre
>>>>>> Using CLASSPATH:
>>>>>> /home/amila/Downloads/apache-tomcat-7.0.68/bin/bootstrap.jar:/home/amila/Downloads/apache-tomcat-7.0.68/bin/tomcat-juli.jar
>>>>>> Tomcat started.
>>>>>>
>>>>>> Earlier I didn't add the openrdf-sesame and openrdf-workbench war
>>>>>> files to the webapp folder as in the vagrant file. So I added them. But
>>>>>> when I open browser to http://localhost:8080/openrdf-sesame/protocol
>>>>>> I got the massage HTTP Status 404 - /openrdf-sesame/protocol
>>>>>> I think there must be a problem with tomcat cofigurations and i'm
>>>>>> working on that.
>>>>>>
>>>>>> Am I doing these things in a correct way? Any ideas about this is
>>>>>> appriciated.
>>>>>>
>>>>>> Thank you!
>>>>>>
>>>>>> On Fri, May 6, 2016 at 8:38 PM, Adina Crainiceanu <[email protected]>
>>>>>> wrote:
>>>>>>
>>>>>>> Amila,
>>>>>>>
>>>>>>> Any progress in getting Accumulo and Rya running? What did you try
>>>>>>> for this?
>>>>>>>
>>>>>>> As one of the emails suggested, you can delete the directory where
>>>>>>> accumulo stores it data, and then re-initialize. The instance name does
>>>>>>> not
>>>>>>> matter for Rya - it is just a parameter provided to Rya.
>>>>>>>
>>>>>>> The following snippet is the relevant part in the vagrant script to
>>>>>>> re-create the data folders and re-initialize accumulo - note that the
>>>>>>> vagrant script does not use hadoop, just the file system and zookeeper:
>>>>>>>
>>>>>>> sudo mkdir /data
>>>>>>> sudo chown vagrant:vagrant /data
>>>>>>> mkdir /data/accumulo
>>>>>>> mkdir /data/accumulo/lib
>>>>>>> mkdir /data/accumulo/lib/ext
>>>>>>> echo "Starting Accumulo..."
>>>>>>> accumulo-${ACCUMULO_VERSION}/bin/accumulo init --instance-name dev
>>>>>>> --password root
>>>>>>> accumulo-${ACCUMULO_VERSION}/bin/start-all.sh
>>>>>>>
>>>>>>> I am concerned by the lack of progress and the lack of a clear plan
>>>>>>> for the project once the coding period begins. Please let me know what
>>>>>>> your
>>>>>>> plans are. I'm here to help you to be successful. Failing, either after
>>>>>>> the
>>>>>>> bonding period, at the mid-term time or at the end is not something that
>>>>>>> anyone wants.
>>>>>>>
>>>>>>>
>>>>>>> Adina
>>>>>>>
>>>>>>> On Tue, May 3, 2016 at 1:36 PM, Adina Crainiceanu <[email protected]>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Hi Amila,
>>>>>>>>
>>>>>>>> 1) Rya should be able to use whatever Accumulo instance name you
>>>>>>>> provide - did you try to use Rya with a given Accumulo instance name
>>>>>>>> and it
>>>>>>>> did not work? What did you try?
>>>>>>>>
>>>>>>>> 2)
>>>>>>>>
>>>>>>>> DId you look at the vagrant script to see if it does something
>>>>>>>> different than you did?
>>>>>>>>
>>>>>>>> DId you have the problem first time you installed Accumulo, or only
>>>>>>>> on restart?
>>>>>>>>
>>>>>>>> Did you try to ping Zookeeper, to make sure it is up?
>>>>>>>> Ping Zookeeper (run: echo ruok | nc 127.0.0.1 2181). -- or
>>>>>>>> whatever ip/port you use for Zookeeper
>>>>>>>>
>>>>>>>> - If Zookeeper is okay, you should see the response imok
>>>>>>>> - Otherwise, restart Zookeeper (run something similar to
>>>>>>>> ~/Installs//zookeeper-3.4.5-cdh4.5.0/bin/zkServer.sh
>>>>>>>> start)
>>>>>>>>
>>>>>>>>
>>>>>>>> 3) Try to connect to the Rya "office hours" tomorrow (Wednesday) at
>>>>>>>> 12pm EST. A message with connect information should be sent out
>>>>>>>> tomorrow
>>>>>>>> morning. Then maybe you will be able to share your screen and ask for
>>>>>>>> help.
>>>>>>>>
>>>>>>>> Adina
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Tue, May 3, 2016 at 9:25 AM, Amila Wijayarathna <
>>>>>>>> [email protected]> wrote:
>>>>>>>>
>>>>>>>>> Hi Adina, These days I'm trying to run Rya in my Ubuntu laptop.
>>>>>>>>> Therefore I set up Hadoop, Zookeeper and Accumulo. After a shutdown,
>>>>>>>>> I need
>>>>>>>>> to restart hadoop, zookeeper and accumulo. But when i do Hadoop and
>>>>>>>>> Zookeeper servers are starting successfully but when i initialize
>>>>>>>>> Accumulo
>>>>>>>>> i get the following, 2016-04-19 16:56:06,984 [fs.VolumeManagerImpl]
>>>>>>>>> WARN :
>>>>>>>>> dfs.datanode.synconclose set to false in : data loss is possible on
>>>>>>>>> hard
>>>>>>>>> system reset or power loss 2016-04-19 16:56:06,985 [init.Initialize]
>>>>>>>>> INFO :
>>>>>>>>> Hadoop Filesystem is hdfs://localhost:9000 2016-04-19 16:56:06,986
>>>>>>>>> [init.Initialize] INFO : Accumulo data dirs are
>>>>>>>>> [hdfs://localhost:9000/accumulo] 2016-04-19 16:56:06,986
>>>>>>>>> [init.Initialize]
>>>>>>>>> INFO : Zookeeper server is localhost:2181 2016-04-19 16:56:06,986
>>>>>>>>> [init.Initialize] INFO : Checking if Zookeeper is available. If this
>>>>>>>>> hangs,
>>>>>>>>> then you need to make sure zookeeper is running 2016-04-19
>>>>>>>>> 16:56:07,250
>>>>>>>>> [init.Initialize] FATAL: It appears the directories
>>>>>>>>> [hdfs://localhost:9000/accumulo] were previously initialized.
>>>>>>>>> 2016-04-19
>>>>>>>>> 16:56:07,250 [init.Initialize] FATAL: Change the property
>>>>>>>>> instance.volumes
>>>>>>>>> to use different filesystems, 2016-04-19 16:56:07,250
>>>>>>>>> [init.Initialize]
>>>>>>>>> FATAL: or change the property instance.dfs.dir to use a different
>>>>>>>>> directory. 2016-04-19 16:56:07,250 [init.Initialize] FATAL: The
>>>>>>>>> current
>>>>>>>>> value of instance.dfs.uri is || 2016-04-19 16:56:07,250
>>>>>>>>> [init.Initialize]
>>>>>>>>> FATAL: The current value of instance.dfs.dir is |/accumulo| 2016-04-19
>>>>>>>>> 16:56:07,250 [init.Initialize] FATAL: The current value of
>>>>>>>>> instance.volumes
>>>>>>>>> is |hdfs://localhost:9000/accumulo| Then i tried to start Accumulo
>>>>>>>>> with
>>>>>>>>> ~/Installs/accumulo-1.6.4/bin/start-all.sh then i get following, WARN
>>>>>>>>> :
>>>>>>>>> Using Zookeeper /home/amila/Installs/zookeeper-3.4.8/zookeeper-3.4.8.
>>>>>>>>> Use
>>>>>>>>> version 3.3.0 or greater to avoid zookeeper deadlock bug. Starting
>>>>>>>>> monitor
>>>>>>>>> on localhost WARN : Max open files on localhost is 1024, recommend
>>>>>>>>> 32768
>>>>>>>>> Starting tablet servers .... done 2016-04-19 17:40:43,303
>>>>>>>>> [fs.VolumeManagerImpl] WARN : dfs.datanode.synconclose set to false in
>>>>>>>>> hdfs-site.xml: data loss is possible on hard system reset or power
>>>>>>>>> loss
>>>>>>>>> 2016-04-19 17:40:43,308 [server.Accumulo] INFO : Attempting to talk to
>>>>>>>>> zookeeper 2016-04-19 17:40:43,522 [server.Accumulo] INFO : Waiting for
>>>>>>>>> accumulo to be initialized 2016-04-19 17:40:44,534 [server.Accumulo]
>>>>>>>>> INFO :
>>>>>>>>> Waiting for accumulo to be initialized 2016-04-19 17:40:45,536
>>>>>>>>> [server.Accumulo] INFO : Waiting for accumulo to be initialized
>>>>>>>>> 2016-04-19
>>>>>>>>> 17:40:46,538 [server.Accumulo] INFO : Waiting for accumulo to be
>>>>>>>>> initialized 2016-04-19 17:40:47,541 [server.Accumulo] INFO : Waiting
>>>>>>>>> for
>>>>>>>>> accumulo to be initialized 2016-04-19 17:40:48,543 [server.Accumulo]
>>>>>>>>> INFO :
>>>>>>>>> Waiting for accumulo to be initialized 2016-04-19 17:40:49,545
>>>>>>>>> [server.Accumulo] INFO : Waiting for accumulo to be initialized
>>>>>>>>> 2016-04-19
>>>>>>>>> 17:40:50,547 [server.Accumulo] INFO : Waiting for accumulo to be
>>>>>>>>> initialized 2016-04-19 17:40:51,549 [server.Accumulo] INFO : Waiting
>>>>>>>>> for
>>>>>>>>> accumulo to be initialized 2016-04-19 17:40:52,550 [server.Accumulo]
>>>>>>>>> INFO :
>>>>>>>>> Waiting for accumulo to be initialized Starting tablet server on
>>>>>>>>> localhost
>>>>>>>>> WARN : Max open files on localhost is 1024, recommend 32768 2016-04-19
>>>>>>>>> 17:40:53,551 [server.Accumulo] INFO : Waiting for accumulo to be
>>>>>>>>> initialized 2016-04-19 17:40:54,552 [server.Accumulo] INFO : Waiting
>>>>>>>>> for
>>>>>>>>> accumulo to be initialized 2016-04-19 17:40:55,554 [server.Accumulo]
>>>>>>>>> INFO :
>>>>>>>>> Waiting for accumulo to be initialized 2016-04-19 17:40:56,555
>>>>>>>>> [server.Accumulo] INFO : Waiting for accumulo to be initialized
>>>>>>>>> 2016-04-19
>>>>>>>>> 17:40:57,556 [server.Accumulo] INFO : Waiting for accumulo to be
>>>>>>>>> initialized 2016-04-19 17:40:58,558 [server.Accumulo] INFO : Waiting
>>>>>>>>> for
>>>>>>>>> accumulo to be initialized 2016-04-19 17:40:59,559 [server.Accumulo]
>>>>>>>>> INFO :
>>>>>>>>> Waiting for accumulo to be initialized 2016-04-19 17:41:00,561
>>>>>>>>> [server.Accumulo] INFO : Waiting for accumulo to be initialized But
>>>>>>>>> when I
>>>>>>>>> change the instance name in accumulo-site.xml then I can successfully
>>>>>>>>> start
>>>>>>>>> Accumulo. But I think to run Rya there must be a constant instance
>>>>>>>>> name as
>>>>>>>>> in Rya README.md. I asked help from Accumulo-dev about this problem
>>>>>>>>> but I'm
>>>>>>>>> unable to find a correct path to solve this.
>>>>>>>>> Any idea about this is thoroughly appriciated.
>>>>>>>>> Thank you.
>>>>>>>>>
>>>>>>>>> On Mon, May 2, 2016 at 8:39 PM, Adina Crainiceanu <[email protected]>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Hi Amila,
>>>>>>>>>>
>>>>>>>>>> Were you able to get Accumulo and Rya running on your machine? If
>>>>>>>>>> not, did you take a look at the Rya Vagrant example
>>>>>>>>>> https://github.com/apache/incubator-rya/tree/develop/extras/vagrantExample/src/main/vagrant
>>>>>>>>>> to see if it helps?
>>>>>>>>>>
>>>>>>>>>> During this community bonding period, you will need to refine the
>>>>>>>>>> project proposal and have a concrete plan that you can start
>>>>>>>>>> implementing
>>>>>>>>>> when the coding starts. A weekly plan would be best, or at least a
>>>>>>>>>> plan
>>>>>>>>>> that has 2-week period sprints. When making the plan, please take
>>>>>>>>>> into
>>>>>>>>>> consideration your outside commitments, exams, etc, and include
>>>>>>>>>> those in
>>>>>>>>>> planning, so we know what to expect. We will help with the plan,
>>>>>>>>>> just ask.
>>>>>>>>>>
>>>>>>>>>> In order to make it easy for everyone to collaborate, I created a
>>>>>>>>>> page on the Rya Confluence for your proposal - you should be able to
>>>>>>>>>> create
>>>>>>>>>> a Confluence account and edit the page/add pages with details.
>>>>>>>>>> https://cwiki.apache.org/confluence/display/RYA/Set-up+continuous+integration+for+Apache+Rya
>>>>>>>>>>
>>>>>>>>>> Here is an example for how a proposal and the details/planning,
>>>>>>>>>> etc looks like for a different project (not Rya) from last year GSoC:
>>>>>>>>>>
>>>>>>>>>> https://cwiki.apache.org/confluence/display/AIRAVATA/%5BGSoC+Proposal%5D+Securing+Airavata+API
>>>>>>>>>>
>>>>>>>>>> Here is a fragment from a message about the expectation for
>>>>>>>>>> students during the community bonding period April 22-May 22:
>>>>>>>>>>
>>>>>>>>>> *Community Bonding activities may involve:*
>>>>>>>>>>
>>>>>>>>>> - Becoming familiar with the community practices and
>>>>>>>>>> processes. (This often involves a mix of observation and
>>>>>>>>>> participation.)
>>>>>>>>>> - Participating on Mailing Lists / IRC / etc. (Not just
>>>>>>>>>> lurking.)
>>>>>>>>>> - Setting up their development environment.
>>>>>>>>>> - Small (or large) patches/bug fixes. (These do not need to
>>>>>>>>>> be directly related to their GSoC project.)
>>>>>>>>>> - Participating in code reviews for others. (Even someone who
>>>>>>>>>> isn't familiar with the project can contribute by pointing out
>>>>>>>>>> potential
>>>>>>>>>> inefficiencies, bad error handling, etc.)
>>>>>>>>>> - Working with their mentor and other org members on refining
>>>>>>>>>> their project plan. This might include finalizing deadlines and
>>>>>>>>>> milestones,
>>>>>>>>>> adding more detail, figuring out potential issues, etc.
>>>>>>>>>> - If the student is already familiar with the organization,
>>>>>>>>>> they could be helping others get involved in the community.
>>>>>>>>>> - Reading (and updating!) documentation they will need to
>>>>>>>>>> understand to complete their project.
>>>>>>>>>> - Reporting or replicating bugs.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Looking forward to working with you,
>>>>>>>>>> Adina
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> --
>>>>>>>>>> Dr. Adina Crainiceanu
>>>>>>>>>> Associate Professor, Computer Science Department
>>>>>>>>>> United States Naval Academy
>>>>>>>>>> 410-293-6822
>>>>>>>>>> [email protected]
>>>>>>>>>> http://www.usna.edu/Users/cs/adina/
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>>
>>>>>>>>> *Amila Wijayarathna*
>>>>>>>>> Undergraduate,
>>>>>>>>> Faculty of Information Technology,
>>>>>>>>> University of Moratuwa,
>>>>>>>>> Sri Lanka.
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> Dr. Adina Crainiceanu
>>>>>>>> Associate Professor, Computer Science Department
>>>>>>>> United States Naval Academy
>>>>>>>> 410-293-6822
>>>>>>>> [email protected]
>>>>>>>> http://www.usna.edu/Users/cs/adina/
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Dr. Adina Crainiceanu
>>>>>>> Associate Professor, Computer Science Department
>>>>>>> United States Naval Academy
>>>>>>> 410-293-6822
>>>>>>> [email protected]
>>>>>>> http://www.usna.edu/Users/cs/adina/
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>>
>>>>>> *Amila Wijayarathna*
>>>>>> Undergraduate,
>>>>>> Faculty of Information Technology,
>>>>>> University of Moratuwa,
>>>>>> Sri Lanka.
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>> *Amila Wijayarathna*
>>>>> Undergraduate,
>>>>> Faculty of Information Technology,
>>>>> University of Moratuwa,
>>>>> Sri Lanka.
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Dr. Adina Crainiceanu
>>>> Associate Professor, Computer Science Department
>>>> United States Naval Academy
>>>> 410-293-6822
>>>> [email protected]
>>>> http://www.usna.edu/Users/cs/adina/
>>>>
>>>
>>>
>>>
>>> --
>>>
>>> *Amila Wijayarathna*
>>> Undergraduate,
>>> Faculty of Information Technology,
>>> University of Moratuwa,
>>> Sri Lanka.
>>>
>>
>>
>>
>> --
>> Dr. Adina Crainiceanu
>> Associate Professor, Computer Science Department
>> United States Naval Academy
>> 410-293-6822
>> [email protected]
>> http://www.usna.edu/Users/cs/adina/
>>
>
>
>
> --
>
> *Amila Wijayarathna*
> Undergraduate,
> Faculty of Information Technology,
> University of Moratuwa,
> Sri Lanka.
>
--
*Amila Wijayarathna*
Undergraduate,
Faculty of Information Technology,
University of Moratuwa,
Sri Lanka.
