Symphony Driver
The Driver is the main project of the Symphony framework that contains the entry point - main method, for a symphony job to get executed. This is also the core engine of the framework where the orchestration of the entire job takes place. The driver needs a workflow to execute the job which is defined in the form of a JSON file. The JSON contains 3 process sequences namely pre-processing, job-processing and post-processing that are executed in sequence by Symphony as part of the workflow execution.
Overview: How driver works?
The driver’s main class WorkflowApp is invoked by a Spark-submit command with 2 arguments: job instance JSON and environment properties.
The driver then parses the first argument i.e. job
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In addition to the above conventional logging, Symphony also logs the critical job updates to a centralized logging platform called Common Logging Environment (CLE). This platform provides a user interface that facilitates the user to monitor the workflow execution in real-time and debug the jobs. For more details on Common Logging Environment (CLE), please visit: https://pulse.kdc.capitalone.com/docs/DOC-189214.
Password Management – Chamber of Secrets (CoS):
The driver module is required to utilize services like Nebula and Common Logging Environment (CLE) which needs a batch id and password. Prior to the integration of CoS with Symphony, passwords were stored on the EMR using “ftppwd” utility, which are not secure. Symphony has incorporated Capital One's enterprise-wide credential management solution - Chamber of Secrets, to make the password storage and retrieval more secure. Please visit this pulse page for more details on Chamber of Secrets: https://pulse.kdc.capitalone.com/docs/DOC-184992.
Class Diagrams:
The opening section of this page provides a high-level overview of how the driver works. Now let us dive into how a workflow is executed in the driver module.
As mentioned previously, the workflow contains 3 process sequences: pre-processing, job processing and post-processing and each process sequence can be
The Pittsburgh Symphony Orchestra’s performance of Mahler’s Symphony No. 5 at the Berlin Philharmonie, gifted the audience with a masterful rendition of the movements within the symphony. The Symphony divides into three separate parts, in which the movements complement each other's characteristics. The symphony orchestra features a myriad of orchestral instruments featuring the Brass, Woodwinds, Strings, and Percussion families. Furthermore, the various movements throughout the performance utilize various musical concepts that bring the music to life. Albeit, the complexity of Mahler’s symphony, the Pittsburgh Symphony Orchestra performed superbly throughout the performance.
Figure 3.6 contains a processing model that contains five states. These states include the following: Running, Ready, Blocked, New, and the Exit State.
Work (Task) – Airline Operations. Requires skilled workforce and much emphasis is placed on customers relation and to providing quality service. To work for Southwest one must follow a vision that is customer service oriented and therefore, pleasant in demeanor and family friendly. Southwest has a special loyalty and commitment to its employees. Southwest had the lowest turnaround time for its aircrafts for a long period of time. To accomplish the difficult task, workers performed many tasks, including loading and unloading luggage, emptying wastes, taking packages and helping passengers, or they were trained to do a lot of multitasking.
Transitioner is responsible for controlling work units’ states. Once there is an activity of each work unit, Transitioner will change its state. There are various state transitions that can be occurred. For example, if the volunteered device does not send any results back in the determined time, then the work unit’s state will be changed to ‘expired’. More on this, if there are enough returned results, Transitioner will change the state of work unit to ‘ready to validate’.
3.The three drivers I chose were 1.) available Ton miles 2.) Number of Departures 3.)Revenue Passengers Miles
The workflow process begins with the manager. The manager communicates to the staff. When there are problems with the workflow process with the staff then the problem is pointed out to the manager. The manager meets with the staff person who has a problem to rectify the situation. Afterwards, the manager meets with all staff about the problem and she discusses the problem. A memo is typed and copied and posted for all personnel to read, sign that they read it, and follow the instructions as stated in the memo. Any further questions they are referred to the manager.
This journal is about the musical piece composed by a man named Benjamin Britten titled The Young Person’s Guide to the Orchestra. This piece was surprisingly interesting to me as it created different feelings of emotions through the instruments volume, sync, and rhythm. I do like various instrumental styles of music, however, I was hesitant about listening to a classical style orchestra. Throughout the piece it seemed the sounds would constantly change, which reminded me of the early black and white cartoons that relied on classical style music to show the emotions they were trying to make the audience feel. For example, I remember a scene from an episode of the old cartoon Popeye, when there was fast paced instrumental music in the background while Popeye was saving Olive Oyl from a dangerous situation and they both were running to get to safety. The xylophone from Bitten’s composition is what made me think of that exact episode of Popeye and Olive Oly running to get to safety.
In Emily St. John Mandel’s novel, Station Eleven, a terrifyingly powerful virus called the “Georgia Flu” sweeps across the world taking out almost every victim it touches. A team of musicians, actors, and backstage members make their way across a pandemic stricken land while hunting, performing, and surviving. They call themselves the “Traveling Symphony”. They’ve been traveling since nearly the beginning of the pandemic, finding and losing members as they go. Throughout the novel, there are several plot lines which run in different directions throughout different time periods, but one consistent theme that ties each twisting plot together throughout the entire novel is that “survival is insufficient”, a quote adopted from Star Trek.
I decided to attend the Symphony on the Prairie on July24, 2015. I haven’t been to a Symphony Orchestra since I was very young and I was unable to attend the Symphony last Friday or Saturday. My fellow classmates invited me to the concert on July 24, 2015. I wanted to view a concert so I agreed to attend the Symphony with them. I also like Harry Potter and Star Wars; and they played pieces from both movies in the Symphony concert. Unfortunately there wasn’t any vocal throughout the concert but there were many instruments. These instruments include the entire string family (violin, viola, cello, and contrabass), the woodwind family (flute, piccolo, oboe, clarinet, bassoon, and contrabassoon), the brass family (English horn, horn, trumpet, trombone, bass trombone, and tuba), and the percussion family (timpani, harp, and keyboard)
Once processing begins, they move directly from process to process (or sit in mini-queues). The result is very fast throughput.
Truck driving is a job that people have a passion for. People don't just wake up thinking I wanna get a job truck driving. It's a passion and commitment because the process is not easy. Especially when you have to go state to state some people can't handle the days away from there family and 2nd they can't handle the on the road life period. There are great outcomes though especially when you a have years behind this career.
Composers rely heavily on ritornello form. More freedom in the form although a sinfonia proper is later developed.
Involved in all the phases of Software Development Life Cycle (SDLC) including Requirements Gathering, Analysis, Design, Development, Testing, Production and Post-Production Support
I have never been personally a fan of the romantic orchestra music but going to listen to a concert live is breathtaking. I attended the Fayetteville Symphony Orchestra, Masterpieces concert with music director Fouad Fakhouri performing Igor Stravinsky’s Symphony of Psalms and Gustav Mahler’s Symphony No.1 in D major. There was a full stage of musicians and a complete choir to back it up.
As cell phones become more popular, texting while driving is becoming the most widely known cause for car accidents among teens. The alarming rate of incidents where texting is involved is getting more parents worried and warning their children about the danger of texting while driving. Parents are urging the fact that drivers should pay attention to the road and traffic, not their phones. A popular study of 18 to 24 year old drivers showed that 66 percent of them have texted while driving. Since texting while driving is becoming more popular many states are passing a law to ban the use of any cell phone device while in a vehicle. Texting while driving is an important issue that is causing many deaths and those who cause these deaths and