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Review request for atlas, Apoorv Naik, Ashutosh Mestry, and Madhan Neethiraj.


Bugs: ATLAS-2308
    https://issues.apache.org/jira/browse/ATLAS-2308


Repository: atlas


Description
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We have 3 graph databases in atlas:
1. titan0 (Titan 0.5.4)
2. titan1 (Titan 1.0.0)
3. janus (JanusGraph 0.2.0)

The default graph-provider is JanusGraph currently. I propose we remove 
'titan1' graph provider from Atlas for reasons below:
1. 'titan1' has not been tested thoroughly and have higher chances of potential 
issues.
2. We have moved on to use JanusGraph in Atlas which is an improved graph 
database forked from Titan 1 with community support and active development 
going on. 
3. TitanDB is retired, the new project JanusGraph which is now part of the 
Linux foundation has more interest and backing.

We will continue to support 'titan0' as Titan 0.5.4 has been tested and have 
wider audience within the community and also to support backward compatibility.
Attach one or more files to this issue


Diffs
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  graphdb/pom.xml 426238cf 
  graphdb/readme.txt 2ad78456 
  graphdb/titan1/pom.xml b9483bad 
  graphdb/titan1/readme.txt 4fcddbaf 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/GraphDbObjectFactory.java
 7928a846 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1Edge.java
 bcc009bb 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1EdgeLabel.java
 fdcc33dc 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1Element.java
 b1cd4583 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1Graph.java
 d94289dc 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1GraphDatabase.java
 dfb53545 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1GraphIndex.java
 5ec11803 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1GraphManagement.java
 a5d3815b 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1IndexQuery.java
 c7e4150f 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1PropertyKey.java
 6b62f27e 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1Vertex.java
 1670e929 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/Titan1VertexQuery.java
 a761a744 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/TitanObjectFactory.java
 a4776a9f 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/graphson/AtlasElementPropertyConfig.java
 df67a836 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/graphson/AtlasGraphSONMode.java
 2bab2877 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/graphson/AtlasGraphSONTokens.java
 49bbdb43 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/graphson/AtlasGraphSONUtility.java
 26abe2e4 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/query/NativeTitan1GraphQuery.java
 733964de 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/query/Titan1GraphQuery.java
 dd0176bf 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/serializer/BigDecimalSerializer.java
 c1a096db 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/serializer/BigIntegerSerializer.java
 dfda9f6e 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/serializer/StringListSerializer.java
 eb99faee 
  
graphdb/titan1/src/main/java/org/apache/atlas/repository/graphdb/titan1/serializer/TypeCategorySerializer.java
 c3e2d1c5 
  
graphdb/titan1/src/main/resources/META-INF/services/javax.script.ScriptEngineFactory
 24c8a755 
  
graphdb/titan1/src/test/java/org/apache/atlas/repository/graphdb/titan1/AbstractGraphDatabaseTest.java
 06e27851 
  
graphdb/titan1/src/test/java/org/apache/atlas/repository/graphdb/titan1/GraphQueryTest.java
 45fbbea6 
  
graphdb/titan1/src/test/java/org/apache/atlas/repository/graphdb/titan1/Titan1DatabaseTest.java
 ab2c8c94 
  
graphdb/titan1/src/test/java/org/apache/atlas/repository/graphdb/titan1/TitanGraphProviderTest.java
 53148fa6 
  graphdb/titan1/src/test/resources/atlas-application.properties af63dd82 
  pom.xml 4ee2d9ec 


Diff: https://reviews.apache.org/r/64503/diff/1/


Testing
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mvn clean package succeeded.


Thanks,

Sarath Subramanian

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