Arraycopy: last destination index 799 out of bounds for long[792]

Neo4j Graph Platform
1
  • Neo4j v4.4
  • Browser v5.9.0
  • Neo4j Driver for dotnet v5.9.0

Hello everybody,
Thanks in advance for looking at my question.

When running larger queries which hit a large quantity of relationships I sometimes get the following error:
arraycopy: last destination index 799 out of bounds for long[792]

I am unable to share the entire query, but this is an example:

WITH DISTINCT tender, tenderVersion
WHERE NOT EXISTS { MATCH ()<-[:NUTS_TREE_PRECOMPUTE_HINT]-(tenderVersion) } 
OR EXISTS { MATCH ()<-[rel:NUTS_TREE_PRECOMPUTE_HINT]-(lot) WHERE rel.NutsCode IN ["NL"] }

When this part is introduced within the query and the query is run it thows the "arraycopy: last destination index 799 out of bounds for long[792]" error.

But when it is changed to:

MATCH (tenderVersion)-[rel:NUTS_TREE_PRECOMPUTE_HINT]->()
WHERE rel.NutsCode IN ["NL"]
OR NOT EXISTS {MATCH ()<-[:NUTS_TREE_PRECOMPUTE_HINT]-(tenderVersion)}

What could be possible causes of this error and how could I monitor its cause?

I understand that the question isn't very specific, but if possible I would like to be able to avoid this error in the future.

2

It looks like you have an array of Long values of length 792, but you are trying to access element 799. Do you have a list in the other part of your query?

The first query seems a little odd. You have a condition for a match that is not related to the variables tender nor tenderVersion.

Can you share more details?