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Comment: Elasticsearch requirements for Java

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Info

Be aware that Tomcat 7 uses java 1.6 by default to compile JSPs. See information about tomcat below on how to configure it to use java 1.7 for JSPs. Tomcat 8 uses java 1.7 by default for JSPs. If you use another Servlet Contain please refer its documentation on this matter.

Elasticsearch requirements for Java

Elasticsearch (used in DSpace for Elasticsearch Usage Statistics, an optional feature) has its own recommendations regarding Java flavour and version:

http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/setup.html

"Elasticsearch is built using Java, and requires at least Java 7 in order to run Only Oracle’s Java and the OpenJDK are supported.

We recommend installing the Java 8 update 20 or later, or Java 7 update 55 or later. Previous versions of Java 7 are known to have bugs that can cause index corruption and data loss."

Apache Maven 3.0.5+ (Java build tool)

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