Im trying to import csv files from disk with cypher commands as shown in the tutorial, but Im getting "Couldn't load the external resourse at: externalResourceFailure.
Is there any "roadmap" for importing csv in windows from files?
Thank you in advance!
take alook at SyntaxException with Neo4j LOAD command
in the question, step 3, please check if you path to the file is correct on your operating system:
the syntax for accessing a local file on windows is simply "file:c:/nosql/test/unclaimed.csv" and not file:// as might be inferred from examples on ...
You have to put the files into the import directory in neo4j.
it will work if path like this "file:///C:/myfile.csv"
The Windows and Linux file systems require different file URI schemes for streaming over HTTP. Neo4j's LOAD CSV Cypher clause makes an HTTP web request to the URI of a file and not the file system path.
For more information on file URI schemes on Windows please take a look at: http://en.wikipedia.org/wiki/File_URI_scheme#Windows_2
You can also create a folder import into your neo4j installation folder and run a cipher like this
LOAD CSV WITH HEADERS FROM "file:///yourcsvfile.csv" AS row
On mac: create a folder inside the Neo4j directory. Neo4j will install in Documents (by default)
mkdir /Users//Documents/Neo4j/default.graphdb/import
Copy your file in this location
Use it like this
USING PERIODIC COMMIT LOAD CSV WITH HEADERS FROM "file:///user_list.csv" as row create (:Users {userId: row.USER_ID });
Related
I'm trying to read a csv file located in my hdfs filesystem through apoc library in Neo4j with the following line of code"
CALL apoc.load.csv('hdfs://ipAddrress:port/myFileLocation.csv')
I also disabled Neo4j configuration for apoc and enabled importing files through apoc. So i included the following lines in my configuration file:
apoc.import.file.use_neo4j_config=false
apoc.import.file.enabled=true
but i keep getting the following error:
Failed to invoke procedure `apoc.load.csv`: Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.fs.FSDataOutputStream
The dependencies are built into neo4j apoc extension but i don't know why the hadoop-related class can't be found. Any help?
After searching the internet a bit, I found this from Tom Geudens.
At this time that is not possible : CSV files can be stored on the
database server and are then accessible using a file:/// URL.
Alternatively, LOAD CSV also supports accessing CSV files via HTTPS,
HTTP, and FTP.
You may be able to expose your hdfs filesystem over http (and then use
a http:// url) but otherwise ... no.
WITH "/Users/nlp/social_graph/graph-nodes.csv" as uri
LOAD CSV WITH HEADERS FROM uri as row
MERGE (:User {id: row.id})
I have a CSV file to contains some nodes, and I want to load it into neo4j through Neo4j Desktop, but got the following error message:
Invalid URL '/Users/nlp/social_graph/graph-nodes.csv': no protocol: /Users/nlp/social_graph/social-nodes.csv
What's the error? Note that before I run the command in the browser, the database is empty. How to load the database?
EDIT: Did some search and added 'file:///' to the file path, this time I got another message:
Couldn't load the external resource at: file:/Users/congminmin/Library/Application%20Support/Neo4j%20Desktop/Application/neo4jDatabases/database-fdb13bea-33f7-409b-a6bd-387a25a679e6/installation-3.5.12/import/Users/congminmin/social_graph/social-nodes.csv
The easiest would be to copy your cv file into the import directory under your neo4j installation directory. Then use file:///social-nodes.csv In your LOAD CSV command.
Find more details here: https://neo4j.com/developer/guide-import-csv/
I know it's late, but if you are using neo4j on docker, the import folder path is as follows:
/var/lib/neo4j/import
You can create a volume that bounds to the import directory. After mounting, copy your local files to your mounted directory, then use file:///file-name in your LOAD command.
I'm trying to load a CSV file into Neo4j Enterprise edition and I think I'm considering all the rules but I don't understand what is the error related to
this is the error :
this is my csv file . I have entered my data in excel and then saved it as a CSV file :
Copy your CSV file to Neo4j Import Directory. Take a look in Neo4j file locations docs. For windows desktop installations this directory is %APPDATA%\Neo4j Community Edition\import.
Change your import path to 'file:///abc.csv'
Try again.
In previous versions of Neo4j (2.X), LOAD CSV would take absolute path from
LOAD CSV WITH HEADERS FROM
'file:///absolute/path/GraphExample2.csv' AS line
However in 3.x, its appending it with NEO4J_HOME to that path.
How does one address absolute path for file imports?
In your configuration file (see here for the documented locations), comment out the dbms.directories.import setting. That will allow neo4j to use your path, as is.
However, commenting out that setting is not secure, so do not do this on production servers.
NOTE: On my Mac, I have the desktop version of neo4j installed. The official documentation seems to have the wrong name for the config file. Mine is named .neo4j.conf, not neo4j.conf.
I created a database Neo4j on a PC, with many relationships, node, etc
how to move/ copy the database from this pc to another?
thanks for the help
francesco
update1: I have tried to found conf/neo4j-server.properties but i don't have...
this is a screenshot of my folder ne04j (It is in Windows document Folder)
http://s12.postimg.org/vn4e22s3x/fold.jpg
Neo4J databases live in your filesystem, you can simply make a copy of the folder in which your Neo4J data is stored. If you are running standalone this folder will be configured in conf/neo4j-server.properties and the line will look something like this:
org.neo4j.server.database.location=data/graph.db
Copy the content of that folder to the graph database folder on your other machine. I'd recommend that your databases are not running when you do this.
I believe you're looking for the dump shell command which you can use to export a database into a single Cypher create statement, you'd "dump" the database and then import it on your new machine.
Information on using the command is outlined here: Neo4j docs
A Neo4j database can be dumped and loaded using the following commands:
neo4j-admin dump --database=<database> --to=<destination-path>
neo4j-admin load --from=<archive-path> --database=<database> [--force]
Limitations
The database should be shutdown before running the dump and load commands.
https://neo4j.com/docs/operations-manual/current/tools/dump-load/
i used the above solution, but the file name was different.
in the folder of the neo4j data, look for folder called conf and inside the configuration file called neo4j.conf
inside this file you will see a line that direct to the folder that contain the data.
its called "graph.db"
replace it with the same folder from your backup of the DB that you want to clone.