---+ Configuring Apache Atlas

---++ Introduction

All configuration in Atlas uses java properties style configuration.

---++ Application Properties

The main configuration file is application.properties which is in the *conf* dir at the deployed
location. It consists of the following sections:

---+++ Graph Database Configs

---++++ Graph persistence engine

This section sets up the graph db - titan - to use a persistence engine. Please refer to
<a href="http://s3.thinkaurelius.com/docs/titan/0.5.4/titan-config-ref.html">link</a> for more
details. The example below uses BerkeleyDBJE.

<verbatim>
metadata.graph.storage.backend=berkeleyje
metadata.graph.storage.directory=data/berkley
</verbatim>

---++++ Graph Search Index
This section sets up the graph db - titan - to use an search indexing system. The example
configuration below setsup to use an embedded Elastic search indexing system.

<verbatim>
metadata.graph.index.search.backend=elasticsearch
metadata.graph.index.search.directory=data/es
metadata.graph.index.search.elasticsearch.client-only=false
metadata.graph.index.search.elasticsearch.local-mode=true
metadata.graph.index.search.elasticsearch.create.sleep=2000
</verbatim>

---+++ Hive Lineage Configs
The higher layer services like hive lineage, schema, etc. are driven by the type system and this
section encodes the specific types for the hive data model.

# This models reflects the base super types for Data and Process
<verbatim>
metadata.lineage.hive.table.type.name=DataSet
metadata.lineage.hive.process.type.name=Process
metadata.lineage.hive.process.inputs.name=inputs
metadata.lineage.hive.process.outputs.name=outputs

## Schema
metadata.lineage.hive.table.schema.query=hive_table where name=?, columns
</verbatim>

---+++ Security Properties

---++++ SSL config
The following property is used to toggle the SSL feature.

<verbatim>
metadata.enableTLS=false
</verbatim>

