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Ondřej Kvasnovský
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Java 8 update 60 is causing "Apps that use non-public APIs will be rejected"
When you try to publish your JavaFX application into app store with Java 1.8.0_60, you are going to get the following rejection. You can verify the issue by running otool for Java 1.8.0_51 and 1.8.0_60. There are two possible solutions. Remove libjfxwebkit....

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Just released app for neat learning and presenting Groovy code on Mac: https://itunes.apple.com/us/app/groovypoint/id1038117543?mt=12 +Groovy 

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How to install Spark on Mac OS X
Download  http://spark.apache.org/downloads.html   Download  http://www.scala-lang.org/download (find the version number in README inside spark archive).  Extract and add on path export SCALA_HOME=/Users/ondrej/scala-2.10.4 export PATH=$PATH:$SCALA_HOME/bin...

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Commands to install and configure ElasticSearch on Ubuntu


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How to run custom Grails tests
Thanks  Jan Rudovský  for help with this. The code works with Grails 2.3.x. Use Custom Grails Tests for older versions. The code below shows how to run your custom tests in functional test environment (so the application is running). For the integration tes...

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Who is using Vaadin plugin for Grails
We are curious who is using the plugin for integration of Vaadin into a Grails application. We could get little info based on 'likes' displayed on  grails.org/plugins/vaadin , but that is not reliable. Then we have made vaadinongrails.com page, to provide b...

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How to configure JDBC river for ElasticSearch
JDBC river makes possible to load data from e.g. MySql database to ElasticSearch and provide data much faster.  Before we start, have a look at the set of jdbc-river parameters . Then you need to pick-up a strategy how to poll data from JDBC. 

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How to install ElasticSearch as a service on CentOS
The following steps were tested for ElasticSearch 0.90.5 on CentOS 6.4.
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