ArangoDB crashs with a litte more complex graph query -

arangodb crashes 2 hop graph query.

image 3 vertex collections va, vb , vc. va connected vb , vc. have instance of vb , want vc connected via edges , va instances.

all of them definded in graph access them arango graph api. used following aql statement query graph. first vas connected vb instance , vcs connected vas.

for va in graph_neighbors("graph", "vb/instance", {direction: "inbound", edgecollectionrestriction: "eab"}) vc in graph_neighbors("graph", va._id, {direction: "outbound", edgecollectionrestriction: "eba"})     return vc 

the result after few minutes of computation arangodb crashes without useful information in log files.

it seems inefficient model edges documents , not links between documents, because in such query whole edge collection has run through multiple times find correct links. assume 2 hops database handle. or there potential improve query , not crash database?

in 2.6 release few days ago (june 2015) changes have been made make graph_neighbors , neighbors faster.

as seen in comments seems fix problem.