This page summarizes the installation guides about big data tools on Windows through Windows Subsystem for Linux (WSL). ...
View detailThis page summarizes the steps required to install Apache Sqoop (v1.4.7) in Windows 10 environment via Windows Subsystem for Linux (WSL). Prerequisites If you have already installed Hadoop 3.2.0 in WSL, ignore the following steps as you don’t need to install it again. Follow&...
View detailThis pages summarizes the steps to install the latest version 2.4.3 of Apache Spark on Windows 10 via Windows Subsystem for Linux (WSL). Prerequisites Follow either of the following pages to install WSL in a system or non-system drive on your Windows 10. ...
View detailThis page summarizes the steps to install Zeppelin version 0.7.3 on Windows 10 via Windows Subsystem for Linux (WSL). Version 0.8.1 When running Zeppelin in Ubuntu, the server may pick up one host address that is not accessible, for example 169.254.148.100, and the the remote interprete...
View detailPreviously, I demonstrated how to configured Apache Hive 3.0.0 on Windows 10. Apache Hive 3.0.0 Installation on Windows 10 Step by Step Guide...
View detailSince Hive 3.x, new authentication feature for HiveServer2 client is added. When starting HiveServer2 service (Hive version 3.0.0), you may encounter errors like: ‘HiveServer2 metastore.RetryingMetaStoreClient: RetryingMetaStoreClient trying reconnect as [username] (auth:S...
View detailIn one of my previous post, I showed how to configure Apache Hive 3.0.0 in Windows 10. Apache Hive 3.0.0 Installation on Windows 10 Step by Step Guide ...
View detailIn my previous post , I showed how to configure a single node Hadoop instance on Windows 10. The steps are not too difficult to follow if you have Java programming backgr...
View detailThis page shows how to install Windows Subsystem for Linux (WSL) system on a non-system drive manually. Enable Windows Subsystem for Linux system feature Open PowerShell as Administrator and run the following command to enable WSL feature: Enable-WindowsOptionalFea...
View detailIn the past months, this website has been using the following Email address to delivery all the notification messages to the website users such as registration confirmation email, comment email and so on. no-reply[at]kontext.tech However, I recently found that...
View detailWith Microsoft SQL Server JDBC driver, you can connect to the database through SQL Server Authentication or Kerberos Authentication. This post summarizes the configurations required for each authentication method with coding examples. *NTLM block in the following diagram represents pure Jav...
View detailI’ve been following Mobius project for a while and have been waiting for this day. .NET for Apache Spark v0.1.0 was just published on 2019-04-25 on GitHub. It provides high performance APIs for programming Apache Spark applications with C# and F#. It is .NET Standard complaint and can run in Wind...
View detailThis post shows you how to connect to HiveServer2 via Hive JDBC driver in Java. *The way to connect to HiveServer1 is very similar though the driver names are different: Version Drive...
View detailIf you have been following my website, you would know I’ve published a number of articles about installing big data tools/framewo...
View detailAre you a Windows/.NET developer and willing to learn big data concepts and tools in your Windows? If yes, you can follow the links below to install them in your PC. The installations are usually easier to do in Linux/UNIX but they are not difficult to implement in Windows either since the...
View detailBackground If you have been working on ASP.NET projects in the past years, you probably have heard or used quite a few client library management frameworks/tools. For example, Bower, npm, Gulp, Grunt, Webpack, Yarn, Parcel, Libman, etc. Before SPA became popular, the default ASP.NET (or A...
View detailIn my previous post about Data Partitioning in Spark (PySpark) In-depth Walkthrough , I mentioned how to repartition data frames in Spark using repartition ...
View detailIn Spark, there are a number of settings/configurations you can specify including application properties and runtime parameters. https://spark.apache.org/docs/latest/configuration.html Ge...
View detailSELECT is one of the most commonly used statements. In this tutorial, I will cover the following items: Two of the principal query clauses—FROM and SELECT Data Types Built-in functions CASE expressions and variations like ISNULL and COALESCE. * The functio...
View detailThis page summarizes the steps to install Hadoop 3.0.0 in your Windows environment. Reference page: https://wiki.apache.org/hadoop/Hadoop2OnWindows ...
View detailIn this article, I am going to introduce how to install Teradata Express in virtual machines in Windows. Download software 1) Download VMware Player for Windows 32-bit and 64-bit from the following link (version 6.0): ...
View detailSQL Server Compact 4.0 (CE 4.0) is a free SQL Server embedded database ideal for building standalone and occasionally connected applications for mobile devices, desktops, Web clients and others. In one of my projects, I used it as the database for logging errors, which assumes the errors will onl...
View detailIn traditional asp.net applications, Server.MapPath is commonly used to generate absolute path in the web server. However, this has been removed from ASP.NET Core. So what is the equivalent way of doing it?
View detailInfosphere DataStage is adopted as ETL (Extract, Transform, Load) tool in many Teradata based data warehousing projects. With the Teradata ODBC and .NET data providers, you can also use the BI tools from Microsoft, i.e. SSIS. In my previous post, I demonstrated how to install Teradata Tool...
View detailSSIS (SQL Server Integration Service) provides a number of convenient tasks to enable data integration. Exporting data from database to Excel file is a common task in ETL (Extract, Transform, Load) projects. Constantly the users/customers may raise format request regarding the Excel extract. To g...
View detailIn this page, I’m going to demonstrate how to write and read parquet files in Spark/Scala by using Spark SQLContext class. Reference What is parquet format? Go the following project site to understand more about parquet. ...
View detailThe identity system in ASP.NET has evolved over time. If you are using ASP.NET Core, you probably found User property is an instance of ClaimsPrincipal in Controller or Razor views. Thus to retrieve the information, you need to utilize the claims.
View detailOverview Recently, I have been working on an ETL framework to load various source data (i.e. files, SQL Server, Oracle and Teradata) into Teradata. Due to some limitations, Java was chosen as the implementation language though IBM Infosphere DataStage is available to use. DataStage has p...
View detailIssue Context After installed Visual Studio 2017 15.3 preview and .net core 2.0 preview SDK, I upgraded one of my existing asp.net core project to 2.0. The project was created using ‘dotnet new angular’ SPA template. I also upgraded all the client app packages to the latest. For exa...
View detailIn my previous posts about Querying Teradata and SQL Server, I logged into the virtual machine graphic interface to manage the database. However, I constantly found it is resource intensive as there is only 4GB memory in my laptop. Instead, I will use text mode to start the virtual machine and co...
View detailTeradata published an official Python module which can be used in DevOps projects. More details can be found at the following GitHub site: https://github.com/Teradata/PyTd Install Teradata module ...
View detailIn my previous post, I demonstrated how to write and read parquet files in Spark/Scala. The parquet file destination is a local folder. Write and Read Parquet Files in Spark/Scala In this page...
View detailIn this post, I will demonstrate how to connect to Teradata database via .NET Data Provider for Teradata using C#. Prerequisites Install the .NET Data Provider for Teradata from the following link: ...
View detailContext This pages demonstrates how to convert string to java.util.Date in Spark via Scala. Prerequisites If you have not installed Spark, follow the page below to install it: ...
View detailIn this post, I am going to demonstrate how to use Eclipse to create and debug C/C++ programs for Unix/Linux in Windows. I am going to use Cygwin GCC as toolchains. Cygwin GDB will also be installed for debugging purpose. I am using Windows 10 and JRE 1.8 in the following steps. Install E...
View detailThis post summarize the common functions that are used when dealing with DateTime datatypes in Teradata.
View detailabout 6 days ago
about 20 days ago
about 20 days ago
This was a great and easy to follow post. THANK YOU!
about 25 days ago
I'm glad it helped. :) It took me a while when I migrated my website to .NET Core a few years ago.
about 28 days ago
Thanks... perfect! New to Core (2.2) ... I was wondering where Server.MapPath() went!
about 1 month ago
about 2 months ago
Thanks again. I finally installed hadoop on WLS but have problem on this article. in the step
%HADOOP_HOME%\sbin\start-dfs.cmd
I get error "datanode.DataNode: Exception in secureMain" and there is no resolution over the web :(
about 2 months ago
@Jonathan
I’m glad to hear that it’s now working for you.
about 2 months ago
Hi,
Thanks for pointing out the error. I did as you suggested and it works now! Great post on setting up Apache and Hadoop in WSL!
Jonathan
about 2 months ago
I get Permission Denied when trying to get hadoop binary. after research I found that I need to use sudo in front of command. So need to use
sudo wget http://mirrors.....
Thanks for great article!
about 2 months ago
Hi,
Most likely it is because ssh is not working. I found that each time when you restart your windows system, you need to re-run the command to restart ssh services:
sudo service ssh restart
Make sure you can ssh localhost successfully without a passphrase.
To make it easy, I have added command ‘sudo service ssh restart’ into my .bashrc file so that each time when I start WSL it will restart ssh to make sure it work.
Please stop all Hadoop services first and then restart the services:
sbin/stop-all.sh
sbin/start-all.sh
In Hadoop home folder there is a ‘logs’ folder created which includes the name node log file too. You can find the detailed the error message there.
Please provide your detailed error logs here if the above suggestions don’t work.
about 2 months ago
In my case, the command:
sbin/start-dfs.sh
is executed without errors, but the NameNode is not started and therefore it is not responding on http://localhost:9870.
Executing jps command I can see how running processes are:
1) SecondaryNameNode
2) DataNode
3) Jps
NameNode process is missing from the returned list.
Any idea on what can be going wrong?
I followed all the instructions in this guide to configure my WSL environment.
Thanks
about 2 months ago
Hi,
run-example is a command not an Scala function. The script file exists in $SPARK_HOME/bin folder. Thus please directly run it in bash (WSL terminal) instead of running it in Spark shell.
Let me know if you have other questions.
about 2 months ago
I folllowed your instructions and installed scala after installing hadoop. But when I try to run the SparkPi example, i get the following;
scala> run-example SparkPi 10
<console>:24: error: not found: value run
run-example SparkPi 10
^
<console>:24: error: not found: value example
run-example SparkPi 10
Not sure what the error is. Thanks.
Sincerely
Jonathan
about 2 months ago
Hi, this post is about installing 3.0.0 and I have not tried 3.2.0 using this approach yet. Some configuration properties have changed.
Your error message looks like that the Username was not configured correctly due to some reason.
However, since you are using Windows 10, I'd suggest you to follow the post below to install 3.2.0 in Windows Subsystem for Linux (WSL).
about 2 months ago
Hi,
I tried your guidelines for installing Hadoop 3.2.0 on my Windows 10 but unfortunately I am unable to start it. I am stuck at the point where you stated the command hadoop namenode -format . I am getting this message at the end of the command Shutting down NameNode at {Username}/192.168.0.200.
But no descriptive error other than that. Can you help me please?
about 2 months ago
You mentioned $HIVE_PATH in one of the previous comments while it should be $HIVE_HOME. Can you please double check that?
Based on what you have described and also if I understand correctly:
Your issue is that you cannot run the following command successfully:
$HIVE_HOME/bin/schematool -dbType derby -initSchema
And you got error: no such file or directory exist.
Usually this issue will happen if:
1) Edit file ~/.bashrc by running the following command
vi ~/.bashrc
2) Add the following line at the end of the file:
export HIVE_HOME={your hive home folder path}
3) Source the settings
source ~/.bashrc
And then run the command:
$HIVE_HOME/bin/schematool -dbType derby -initSchema
If the above suggestions don't work still, I'm not sure whether I can help more unless you provide screenshots about your Cygwin window, hive folder, and detailed error messages here.
You can upload images in the comment section directly. Or alternatively, write me an email at enquiry[at]kontext.tech
about 2 months ago
So, $HIVE_HOME/bin was in the path. So, I just ran schematool -dbType mysql -initSchema. Also, before that I did hive -service metastore.