Data World

Exam 70-776: Perform Big Data Engineering on Microsoft Cloud Services

Posted by Pramod Singla on October 6, 2017


Design and Implement Complex Event Processing By Using Azure Stream Analytics (15-20%)

  • Ingest data for real-time processing
    • Select appropriate data ingestion technology based on specific constraints; design partitioning scheme and select mechanism for partitioning; ingest and process data from a Twitter stream; connect to stream processing entities; estimate throughput, latency needs, and job footprint; design reference data streams
  • Design and implement Azure Stream Analytics
    • Configure thresholds, use the Azure Machine Learning UDF, create alerts based on conditions, use a machine learning model for scoring, train a model for continuous learning, use common stream processing scenarios
  • Implement and manage the streaming pipeline
    • Stream data to a live dashboard, archive data as a storage artifact for batch processing, enable consistency between stream processing and batch processing logic
  • Query real-time data by using the Azure Stream Analytics query language
    • Use built-in functions, use data types, identify query language elements, control query windowing by using Time Management, guarantee event delivery

Design and Implement Analytics by Using Azure Data Lake (25-30%)

  • Ingest data into Azure Data Lake Store
    • Create an Azure Data Lake Store (ADLS) account, copy data to ADLS, secure data within ADLS by using access control, leverage end-user or service-to-service authentication appropriately, tune the performance of ADLS, access diagnostic logs
  • Manage Azure Data Lake Analytics
    • Create an Azure Data Lake Analytics (ADLA) account, manage users, manage data sources, manage, monitor, and troubleshoot jobs, access diagnostic logs, optimize jobs by using the vertex view, identify historical job information
  • Extract and transform data by using U-SQL
    • Schematize data on read at scale; generate outputter files; use the U-SQL data types, use C# and U-SQL expression language; identify major differences between T-SQL and U-SQL; perform JOINS, PIVOT, UNPIVOT, CROSS APPLY, and Windowing functions in U-SQL; share data and code through U-SQL catalog; define benefits and use of structured data in U-SQL; manage and secure the Catalog
  • Extend U-SQL programmability
    • Use user-defined functions, aggregators, and operators, scale out user-defined operators, call Python, R, and Cognitive capabilities, use U-SQL user-defined types, perform federated queries, share data and code across ADLA and ADLS
  • Integrate Azure Data Lake Analytics with other services
    • Integrate with Azure Data Factory, Azure HDInsight, Azure Data Catalog, and Azure Event Hubs, ingest data from Azure SQL Data Warehouse

Design and Implement Azure SQL Data Warehouse Solutions (15-20%)

  • Design tables in Azure SQL Data Warehouse
    • Choose the optimal type of distribution column to optimize workflows, select a table geometry, limit data skew and process skew through the appropriate selection of distributed columns, design columnstore indexes, identify when to scale compute nodes, calculate the number of distributions for a given workload
  • Query data in Azure SQL Data Warehouse
    • Implement query labels, aggregate functions, create and manage statistics in distributed tables, monitor user queries to identify performance issues, change a user resource class
  • Integrate Azure SQL Data Warehouse with other services
    • Ingest data into Azure SQL Data Warehouse by using AZCopy, Polybase, Bulk Copy Program (BCP), Azure Data Factory, SQL Server Integration Services (SSIS), Create-Table-As-Select (CTAS), and Create-External-Table-As-Select (CETAS); export data from Azure SQL Data Warehouse; provide connection information to access Azure SQL Data Warehouse from Azure Machine Learning; leverage Polybase to access a different distributed store; migrate data to Azure SQL Data Warehouse; select the appropriate ingestion method based on business needs

Design and Implement Cloud-Based Integration by using Azure Data Factory (15-20%)

  • Implement datasets and linked services
    • Implement availability for the slice, create dataset policies, configure the appropriate linked service based on the activity and the dataset
  • Move, transform, and analyze data by using Azure Data Factory activities
    • Copy data between on-premises and the cloud, create different activity types, extend the data factory by using custom processing steps, move data to and from Azure SQL Data Warehouse
  • Orchestrate data processing by using Azure Data Factory pipelines
    • Identify data dependencies and chain multiple activities, model schedules based on data dependencies, provision and run data pipelines, design a data flow
  • Monitor and manage Azure Data Factory
    • Identify failures and root causes, create alerts for specified conditions, perform a redeploy, use the Microsoft Azure Portal monitoring tool

Manage and Maintain Azure SQL Data Warehouse, Azure Data Lake, Azure Data Factory, and Azure Stream Analytics (20-25%)

  • Provision Azure SQL Data Warehouse, Azure Data Lake, Azure Data Factory, and Azure Stream Analytics
    • Provision Azure SQL Data Warehouse, Azure Data Lake, and Azure Data Factory, implement Azure Stream Analytics
  • Implement authentication, authorization, and auditing
    • Integrate services with Azure Active Directory (Azure AD), use the local security model in Azure SQL Data Warehouse, configure firewalls, implement auditing, integrate services with Azure Data Factory
  • Manage data recovery for Azure SQL Data Warehouse, Azure Data Lake, and Azure Data Factory, Azure Stream Analytics
    • Backup and recover services, plan and implement geo-redundancy for Azure Storage, migrate from an on-premises data warehouse to Azure SQL Data Warehouse
  • Monitor Azure SQL Data Warehouse, Azure Data Lake, and Azure Stream Analytics
    • Manage concurrency, manage elastic scale for Azure SQL Data Warehouse, monitor workloads by using Dynamic Management Views (DMVs) for Azure SQL Data Warehouse, troubleshoot Azure Data Lake performance by using the Vertex Execution View
  • Design and implement storage solutions for big data implementations
    • Optimize storage to meet performance needs, select appropriate storage types based on business requirements, use AZCopy, Storage Explorer and Redgate Azure Explorer to migrate data, design cloud solutions that integrate with on-premises data

Useful Links:

https://www.microsoft.com/en-us/learning/exam-70-776.asp

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Posted in Azure, Big Data, Certifications, Hadoop | Tagged: , , , , | Leave a Comment »

Leadership Tips set – 1

Posted by Pramod Singla on August 4, 2017


  1. Approach-ability :

    • Spend time with the team informally

    • Do one on one with the team

    • Use informal language outside meeting room

    • Build trust and be honest

  2. Use emotional intelligence

    • IQ gets you hired but EQ gets you promoted

    • self awareness

    • self regulation

    • Motivation

    • Empathy

    • Social Skills

  3. Leaders are slaves

    • Selfless

    • ego-less

    • growing others

 

Posted in Leadership, Motivational | Tagged: , | Leave a Comment »

Exam 70-775: Big Data Engineering with HDInsight

Posted by Pramod Singla on March 22, 2017


1) Administer and Provision HDInsight Clusters

2) Implement Big Data Batch Processing Solutions

3) Implement Big Data Interactive Processing Solutions

  • Implement interactive queries for big data with Spark SQL

  • Perform exploratory data analysis by using Spark SQL

  • Implement interactive queries for big data with Interactive Hive

    • Enable Hive LLAP through Hive settings, manage and configure memory allocation for Hive LLAP jobs, connect BI tools to Interactive Hive clusters

        • Enable Hive LLAP through Hive settings
        • Manage and configure memory allocation for Hive LLAP jobs

          Through Ambari->Hive->Configs->Interactive Query

        • Connect BI tools to Interactive Hive clusters
        • Perform interactive querying and visualization
        • Use Ambari Views
        • Use HiveQL
        • Parse CSV files with Hive
           CREATE TABLE TAB_NAME (COL1 COL_TYPE1 COL2 COL_TYPE2)
           ROW FORMAT DELIMITED FIELDS TERMIBATED BY
           LOAD DATA LOCAL INPATH 'wasbs://yourcsvfile.csv' INTO TABLE TAB_NAME
          
        • Use ORC versus Text for caching
           CREATE TABLE IF NOT EXISTS TAB_NAME (COL1 COL_TYPE1 COL2 COL_TYPE2)
           STORED AS ORC
          
        • Use internal and external tables in Hive
        • Use Zeppelin to visualize data
  • Perform exploratory data analysis by using Hive

    • Perform interactive querying and visualization, use Ambari Views, use HiveQL, parse CSV files with Hive, use ORC versus Text for caching, use internal and external tables in Hive, use Zeppelin to visualize data

    • Useful Links
  • Perform interactive processing by using Apache Phoenix on HBase

    • Use Phoenix in HDInsight; use Phoenix Grammar for queries; configure transactions, user-defined functions, and secondary indexes; identify and optimize Phoenix performance; select between Hive, Spark, and Phoenix on HBase for interactive processing; identify when to share metastore between a Hive cluster and a Spark cluster

      1. Useful Links

4) Implement Big Data Real-Time Processing Solutions

Useful links:

Posted in Big Data, Certifications, Hadoop, Spark | Tagged: , , , | Leave a Comment »

Python : Playing with Linked list

Posted by Pramod Singla on May 14, 2018


  • Create linked list and add node at the beginning

class node:

    def __init__(self, p_data):

        self.data=p_data

        self.next=None

class linkedlist:

    def __init__(self):

        self.head=None

        self.len=0

    def addNodeAtBegin(self,data):

        newNode=node(data)

        newNode.next=self.head

        self.head=newNode

        self.len=self.len+1

    def print(self):

        node=self.head

        while node:

            print(node.data)

            node=node.next

newlinkedList=linkedlist()

newlinkedList.addNodeAtBegin(10)

newlinkedList.print()

 

  • Linked list and add node in sorted list

class node:

    def __init__(self, p_data):

        self.data=p_data

        self.next=None

class linkedlist:

    def __init__(self):

        self.head=None

        self.len=0

    def addNodeAtBegin(self,data):

        newNode=node(data)

        newNode.next=self.head

        self.head=newNode

        self.len=self.len+1

    def sortedInsert(self,data):

        newNode=node(data)

        Curr=self.head

        if Curr==None or Curr.data>newNode.data:

            newNode.next=self.head

            self.head=newNode

        else:

            Next=Curr.next

            while Curr.data<=newNode.data:

                if Curr.next==None:

                    Curr.next=newNode

                    newNode.next=None

                    break;

                if Curr.data<=newNode.data and Next.data>=newNode.data:

                    Curr.next=newNode

                    newNode.next=Next

                    self.len=self.len+1

                    break

                Curr=Next

                Next=Next.next

    def print(self):

        node=self.head

        while node:

            print(node.data)

            node=node.next

newSortedlinkedList=linkedlist()

newSortedlinkedList.sortedInsert(10)

newSortedlinkedList.sortedInsert(20)

newSortedlinkedList.sortedInsert(30)

newSortedlinkedList.sortedInsert(15)

newSortedlinkedList.sortedInsert(10)

newSortedlinkedList.sortedInsert(30)

newSortedlinkedList.sortedInsert(40)

newSortedlinkedList.sortedInsert(5)

newSortedlinkedList.print()

 

Posted in Interview Questions, Python | Tagged: , | Leave a Comment »

Python: Find Whether A String Could be Palindrome or Not

Posted by Pramod Singla on May 14, 2018


str=”amalaylam”

flag=0

for i, c in enumerate(str):

    print (i,c,ascii(c),str.count(c))

    if (str.count(c))%2 != 0:

        flag=flag+1;

        if flag>1:

            print(” Not palindrome”)

            break;

        continue;

if flag<=1:

    print(”  palindrome”)

Posted in Interview Questions, Python | Tagged: , , | Leave a Comment »

Data Structure and Algorithm Interview Questions With Python

Posted by Pramod Singla on May 14, 2018


  1. Find whether a string could be palindrome or not?
  2. Linked list creation with add node at the beginning
  3. Linked list creation and add node in sorted list

Posted in Interview Questions, Python | Leave a Comment »

Exam 70-776: Perform Big Data Engineering on Microsoft Cloud Services

Posted by Pramod Singla on January 4, 2018


Design and Implement Complex Event Processing By Using Azure Stream Analytics (15-20%)

Design and Implement Analytics by Using Azure Data Lake (25-30%)

Design and Implement Azure SQL Data Warehouse Solutions (15-20%)

Design and Implement Cloud-Based Integration by using Azure Data Factory (15-20%)

Manage and Maintain Azure SQL Data Warehouse, Azure Data Lake, Azure Data Factory, and Azure Stream Analytics (20-25%)

Useful Links

https://www.microsoft.com/en-us/learning/exam-70-776.aspx

https://www.mssqltips.com/sqlservertip/5102/exam-material-for-the-microsoft-70776-perform-big-data-engineering-on-microsoft-cloud-services/

 

Posted in Big Data, Certifications, Machine Learning | Tagged: , , , , , , | 1 Comment »