JanusGraph / JanusGraph/janusgraph

Could not register new index field with index backend

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area/docs
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Java
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Description

Configuration:

```
gremlin.graph=org.janusgraph.core.JanusGraphFactory
storage.backend=cql
index.search.backend=elasticsearch
index.search.hostname=127.0.0.1
index.search.elasticsearch.use-all-field=false
index.search.elasticsearch.create.use-external-mappings=true
```

Env:
1. cassandra 3.10
2. elasticsearch 5.4.2
3. janusgraph 0.3.0-SNAPSHOT

```gremlin
gremlin> graph = JanusGraphFactory.open('conf/janusgraph-cql-es.properties')
==>standardjanusgraph[cql:[127.0.0.1]]
gremlin> GraphOfTheGodsFactory.load(graph)
Could not register new index field with index backend
Type ':help' or ':h' for help.
Display stack trace? [yN]y
org.janusgraph.core.JanusGraphException: Could not register new index field with index backend
```

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the failure with conf/janusgraph-cql-es.properties and the listed Cassandra, Elasticsearch, and JanusGraph versions, starting at GraphOfTheGodsFactory.load(graph). Capture the full stack trace and trace the index-field registration path. Done means the sample graph loads without “Could not register new index field with index backend” or the issue documents a confirmed incompatibility.

Written by the indexing model from the issue text.

Assessment

Tech stack
cassandra, elasticsearch, java
Domain
databases
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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