Pavel

TP 3.5.0 has support of null semantics, so possibly to remove special tokens https://tinkerpop.apache.org/docs/3.5.0-SNAPSHOT/upgrade/#_use_of_null

Full changelog https://github.com/apache/tinkerpop/blob/3.5.0/CHANGELOG.asciidoc#release-3-5-0

Support for temporal data

4

For support queries like this: ``` MATCH (n) WITH datetime.truncate('day', n.date) as day RETURN day, count(day) ``` Where `n.date` it is Date or Instant https://neo4j.com/docs/cypher-manual/current/functions/#header-query-functions-temporal

Extra gremlin step

1

Consider next query ``` MATCH (n:V) WHERE n.p = '123' RETURN count(n)" ``` And translated gremlin ``` g.V().hasLabel('V') .has('p', eq('123')) .is(neq(' cypher.null')) .count() .project('count').by(__.identity()) ``` It seems `is` step is...

Exception: ``` java.lang.UnsupportedOperationException: Unsupported match pattern: NamedPatternPart(Variable(p),ShortestPaths(... ```

Multilable issues

3

First, if we use multilable options, that labels not sorted, and we have some problem during queries Second, if we try search vertices with partial label, that found nothing I...

Wrong result for count query when mixed index optimization used

3

For confirmed bugs, please report: - Version: 0.6.0 - Storage Backend: all - Mixed Index Backend: all - Link to discussed bug: - Expected Behavior: correct answer - Current Behavior:...

Currently AdjacentVertexHasIdOptimizerStrategy does not support hasContainers with more than 1 step So next traversal not optimized ``` graph.traversal().V().hasId(P.within(1L)).bothE().otherV().hasId(2L).has('a','b').explain() ``` ``` AdjacentVertexHasIdOptimizerStrategy [P] [GraphStep(vertex,[]), HasStep([~id.within([1])]), VertexStep(BOTH,vertex), HasStep([~id.eq(2), a.eq(b)])] AdjacentVertexFilterOptimizerStrategy [P] [GraphStep(vertex,[]),...

Improve vertex label lookup

5

Fix for #1709 Signed-off-by: Pavel Ershov ----- Thank you for contributing to JanusGraph! In order to streamline the review of the contribution we ask you to ensure the following steps...

Deadlock when concurrent node modification in berkeley

7

Example of code ``` @Test void deadlock(@TempDir File file) throws InterruptedException { JanusGraph graph = JanusGraphFactory.open("berkeleyje:" + file.getAbsolutePath()); graph.traversal().addV().property("a", "b").iterate(); graph.tx().commit(); for (int i = 0; i < 2; i++)...