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https://issues.apache.org/jira/browse/ATLAS-2478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16386101#comment-16386101
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Pierre Padovani commented on ATLAS-2478:
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[~davidrad] Could I get your thoughts on this issue please? Include anyone else
you think might have some input.
Thanks!
> Elasticsearch support is broken for JanusGraph
> ----------------------------------------------
>
> Key: ATLAS-2478
> URL: https://issues.apache.org/jira/browse/ATLAS-2478
> Project: Atlas
> Issue Type: Bug
> Components: atlas-core
> Affects Versions: 1.0.0-alpha
> Reporter: Pierre Padovani
> Assignee: Pierre Padovani
> Priority: Major
> Fix For: 1.0.0
>
>
> With JanusGraph the Elasticsearch support moved to 5.x+. This introduced a
> change where fields that contained '.' (dots) were not allowed unless either
> a specific cluster wide setting was enabled AND the mapping was formatted
> such that each of the fields that contained a '.' could be considered part of
> an object.
> Example:
> {code:java}
> foo.x
> foo.y
> foo.z{code}
> Elasticsearch looks at these fields as if they are truly:
> {code:java}
> foo : {
> x,
> y,
> z
> }{code}
> In the file:
> /atlas/common/src/main/java/org/apache/atlas/repository/Constants.java
> {code:java}
> /**
> * Properties for type store graph.
> */
> public static final String TYPE_CATEGORY_PROPERTY_KEY =
> INTERNAL_PROPERTY_KEY_PREFIX + "type.category";
> public static final String VERTEX_TYPE_PROPERTY_KEY =
> INTERNAL_PROPERTY_KEY_PREFIX + "type";
> public static final String TYPENAME_PROPERTY_KEY =
> INTERNAL_PROPERTY_KEY_PREFIX + "type.name";
> public static final String TYPEDESCRIPTION_PROPERTY_KEY =
> INTERNAL_PROPERTY_KEY_PREFIX + "type.description";
> public static final String TYPEVERSION_PROPERTY_KEY =
> INTERNAL_PROPERTY_KEY_PREFIX + "type.version";
> public static final String TYPEOPTIONS_PROPERTY_KEY =
> INTERNAL_PROPERTY_KEY_PREFIX + "type.options";
> {code}
> These are the only fields that cause Elasticsearch issue. As you can see a
> field called 'type' is created, then additional fields type.name,
> type.description etc. This will cause a mapping conflict exception in
> Elasticsearch and it will refuse to create the mapping.
>
> The easy fix is to simply replace the '.' with an '_' (underscore) but this
> will be a backwards incompatible change for existing customers.
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