16 January 2015

SSL / HTTPS is often not simple. Here is some light in addition to the Cloudera Security guide that should help.  SSL between your browser and Hue To configure Hue to use HTTPS we need a self signed SSL certificate that does not require a passphrase. Here is how to generate a private key and a self-signed certificate for the Hue server: openssl genrsa 4096 server.key openssl req -new -x509 -nodes -sha1 -key server.…

14 January 2015

Big Data Web applications for Interactive Hadoop Presented by Enrico Berti This talk describes how open source Hue was built in order to provide a better Hadoop User Experience. The underlying technical details of its architecture, the lessons learned and how it integrates with Impala, Search and Spark under the cover will be explained. The presentation continues with real life analytics business use cases. It will show how data can be easily imported into the cluster and then queried interactively with SQL or through a visual search dashboard.…

16 December 2014

Guest post from Andrew that we regularly update (Dec 19th 2014)  I decided to deploy Hue 3.7, from tarballs (note, other sources like packages from the ‘Install’ menu above would work too), on HDP 2.2 recently and wanted to document some notes for anyone else looking to do the same. Deployment Background: Node Operating System: CentOS 6.6 - 64bit Cluster Manager: Ambari 1.7 Distribution: HDP 2.2 Install Path (default): /usr/local/hue HUE User: hue After compiling (some hints there), you may run into out of the box/post-compile startup issues.…

15 December 2014

¡Hola!, Hello! After a last escape in Europe, the Hue team went for some more exotic locations: Nicaragua & Belize! After some “rough” driving from Managua to the coast, the team enjoyed some surfing and a visit of the Volcano island, Ometepe. Then it was time for a jump to the Carribean in Caye Caulker. There, lobsters, lobsters burritos and incredible sunsets were on the menu!    Onwards!…

12 December 2014

We previously showed in detail how to use SSL encryption with the Impala or Hive Editors. Here is now a step by step guide about how to use LDAP authentication instead of no authentication or Kerberos. Note: this requires Hue 3.7 or CDH5.2 HiveServer2 had SSL enabled so Hive Editor could not connect to HiveServer2. HiveServer2 logs showed SSL errors indicating that it received plaintext (good hint at the cause)…

11 December 2014

Hue ships out of the box with the HTTP server CherryPy, but some users have expressed interest having Apache HTTP 2 serve Hue with mod_wsgi. Their motivation is that they are more familiar with Apache or have already several Apache instances deployed. It turns out it’s pretty simple to do. It only requires a small script, a Hue configuration option, and a configuration block inside Apache. This post describes how to have Apache serve the static content and run the Python code of Hue.…

09 December 2014

In Hue 3.0 we made transparent the use of HCatalog in the Pig scripts. Today, we are going to detail how to run Pig script with HCatalog in some secured cluster. The process is somehow still complicated, we will try to make it transparent to the user in HUE-2480. As usual, if you have questions or feedback, feel free to contact the Hue community on hue-user or @gethue.com!  Pig script to execute We are going to use this simple script that display the first records of one of the sample Hive tables:…

03 December 2014

If you are getting this error, make some disk space! 1/1 local-dirs are bad: /var/lib/hadoop-yarn/cache/yarn/nm-local-dir; 1/1 log-dirs are bad: /var/log/hadoop-yarn/containers   Node Manager logs yarn.server.nodemanager.DirectoryCollection: Directory /var/lib/hadoop-yarn/cache/yarn/nm-local-dir error, used space above threshold of 90.0%, removing from list of valid directories 2014-11-17 17:45:00,713 WARN org.apache.hadoop.yarn.server.nodemanager.DirectoryCollection: Directory /var/log/hadoop-yarn/containers error, used space above threshold of 90.0%, removing from list of valid directories 2014-11-17 17:45:00,713 INFO org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService: Disk(s) failed: 1/1 local-dirs are bad: /var/lib/hadoop-yarn/cache/yarn/nm-local-dir; 1/1 log-dirs are bad: /var/log/hadoop  Resource Manager logs 2014-11-17 16:57:07,301 INFO org.…

22 November 2014

Hue has been shipping SAML 2.0 authentication for quite some time. SAML 2.0 is an alternative to LDAP which lets you provide single sign on (SSO) in your company so that users can use the same login/password in all the systems. Unfortunately our support for SAML 2.0 was limited to a few small use cases. In the upcoming Hue 3.8.0 / CDH 5.3.0, we now support all of the main SAML 2.…

13 November 2014

Interactively Search and Visualize Your Big Data Presented by Romain Rigaux, Cloudera Open up your user base to the data! Contrary to programming and SQL, almost everybody knows how to search. This talk describes through an interactive demo based on open source Hue how users can graphically search their data in Hadoop. The underlying technical details of the application and its interaction with Apache Solr will be clarified. The session will detail how to get started with data indexing in just a few clicks as well as explore several data analysis scenarios.…