Neo4j 3.5.0 non-existing index exception after dropping indexes

When dropping indexed in Neo4j, subsequent starts show exceptions, looking for non-existing index files.
As pre 3.5 indexes are now all deprecated, we need to move to the new format. So first I removed all current indexes using the drop index instruction. This generates java exceptions in debug.log.
Is there a way for me to purge / clean up the database somehow?
We're using Neo4j Desktop on Windows for development, and also run a Centos 7 community edition.

  • Neo4j version: 3.5.0
  • Operating system: Neo4j Desktop

Extract from debug.log:

2018-12-29 09:13:50.573+0000 INFO [o.n.k.i.s.f.RecordFormatSelector] Selected RecordFormat:StandardV3_4[v0.A.9] record format from store C:\Users\user.Neo4jDesktop\neo4jDatabases\database-712d77d4-7512-4d1a-b01c-24ee75332088\installation-3.5.0\data\databases\graph.db
2018-12-29 09:13:50.598+0000 INFO [o.n.k.i.s.f.RecordFormatSelector] Selected RecordFormat:StandardV3_4[v0.A.9] record format from store C:\Users\user.Neo4jDesktop\neo4jDatabases\database-712d77d4-7512-4d1a-b01c-24ee75332088\installation-3.5.0\data\databases\graph.db
2018-12-29 09:13:50.598+0000 INFO [o.n.k.i.s.f.RecordFormatSelector] Format not configured. Selected format from the store: RecordFormat:StandardV3_4[v0.A.9]
2018-12-29 09:13:51.135+0000 ERROR [o.n.k.i.i.s.f.FusionIndexProvider] Failed to open index:9. Requesting re-population. C:\Users\user.Neo4jDesktop\neo4jDatabases\database-712d77d4-7512-4d1a-b01c-24ee75332088\installation-3.5.0\data\databases\graph.db\schema\index\lucene_native-2.0\9\string-1.0\index-9: C:\Users\user.Neo4jDesktop\neo4jDatabases\database-712d77d4-7512-4d1a-b01c-24ee75332088\installation-3.5.0\data\databases\graph.db\schema\index\lucene_native-2.0\9\string-1.0\index-9: Cannot map non-existing file | GBPTree[file:C:\Users\user.Neo4jDesktop\neo4jDatabases\database-712d77d4-7512-4d1a-b01c-24ee75332088\installation-3.5.0\data\databases\graph.db\schema\index\lucene_native-2.0\9\string-1.0\index-9]
java.nio.file.NoSuchFileException: C:\Users\user.Neo4jDesktop\neo4jDatabases\database-712d77d4-7512-4d1a-b01c-24ee75332088\installation-3.5.0\data\databases\graph.db\schema\index\lucene_native-2.0\9\string-1.0\index-9: C:\Users\user.Neo4jDesktop\neo4jDatabases\database-712d77d4-7512-4d1a-b01c-24ee75332088\installation-3.5.0\data\databases\graph.db\schema\index\lucene_native-2.0\9\string-1.0\index-9: Cannot map non-existing file | GBPTree[file:C:\Users\user.Neo4jDesktop\neo4jDatabases\database-712d77d4-7512-4d1a-b01c-24ee75332088\installation-3.5.0\data\databases\graph.db\schema\index\lucene_native-2.0\9\string-1.0\index-9]
...

were you able to resolve this issue?
could you please share the details?

It would be best to create your own new question for this, and provide details such as your version of Neo4.

Hi @gagan.suri sorry I didn't see your response up to now (no notifications either). Considering my thread was from 2 years before - we've moved to neo4j v4 and although I don't know whether this issue still occurs, either way it doesn't affect normal operation for us.