morpheus

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OPTIONAL MATCH issues + Continued Development and Support \ Community for Morpheus (Spark 3 support, bugfixes )

3

hi, i have encountered what i believe is a bug in the optional match implementation , and hoping to get some guidance as to how i could help remediate it...

MarcianoAvihay

Could not initialize class org.opencypher. morpheus.impl.MorpheusFunctions

3

The following code, based on https://github.com/opencypher/morpheus/blob/0.4.2/morpheus-examples/src/main/scala/org/opencypher/morpheus/examples/CypherSQLRoundtripExample.scala : ``` val result = graph.cypher(""" |MATCH | (t1:Trip)-[:CONTAINS]-(s1:Stop) |RETURN t1.id AS trip_id """.stripMargin) result.records.asMorpheus.df.toDF("trip_id").createOrReplaceTempView("results") ``` gives me this error: `error: value asMorpheus is...

lakshmanok

Avoid deadlock on write transaction

1

I've noticed that writing relationship table [(here)](https://github.com/opencypher/morpheus/blob/9f500f5364c0ba14933d96d088d5a8501d4644ad/morpheus-spark-cypher/src/main/scala/org/opencypher/morpheus/api/io/neo4j/Neo4jPropertyGraphDataSource.scala#L202) containing dozens of millions of rows with large batches (default value in the configuration, 100000) generates a lot of warnings like this ```...

goshaQ

Get/Print the Cypher query AST in Morpheus

1

Hello, I'm asking is there a way to get/print the AST of the passed cypher query in Morpheus as a string or an object. Thanks in advance for your reply!

MohamedRagabAnas

Morpheus build in offline environment.

3

Hi, Not sure if correct place to ask so feel free to move. Is there any material on installing morpheus in an offline environment? I can build and install at...

horndog

Support for Python API

3

Python API would open this library to a significant section of developers who are not in JAVA/SCALA camp. WIth many of us doing data science in PYTHON, having only scala...

rkaveti1

Problem with the submitting Spark job of Morpheus Examples jar

1

I have the following on my cluster of machines: OS: Centos 7 Spark: version 2.4.3 Scala: Version 2.12.8 I have run the (./gradlew allJar -x test) in the root directory...

MohamedRagabAnas

gradlew run issue

3

I'm trying to run the one of the examples inside morpheus on a spark cluster I have edited the creation of the morpheus session using the following lines of code:...

MohamedRagabAnas

How does morpheus stores the graph on HDFS?

4

How does Morpheus stores the graph on HDFS? does it layout the same way as neo4j would on disk? I am just trying to figure out how to store and...

kant111

Deleting a graph from PropertyGraphDataSource

2

[The deleteGraph method](https://github.com/opencypher/morpheus/blob/9f500f5364c0ba14933d96d088d5a8501d4644ad/morpheus-spark-cypher/src/main/scala/org/opencypher/morpheus/api/io/neo4j/Neo4jPropertyGraphDataSource.scala#L142) doesn't take into account created constraints on the metaLabel. Problem is that `DETACH DELETE` doesn't remove associated constraints and indexes. That causes an error when a PropertyGraph...

goshaQ