Error running example

[psugihara]

Hey, I'm trying to run the example relay server and it's throwing me an error when I do bin/start-example-relay.sh person:

databus2-example-relay-pkg $ Exception in thread "main" java.lang.NullPointerException
    at java.io.Reader.<init>(Reader.java:61)
    at java.io.InputStreamReader.<init>(InputStreamReader.java:55)
    at com.linkedin.databus2.schemas.ResourceVersionedSchemaSetProvider.loadSchemas(ResourceVersionedSchemaSetProvider.java:61)
    at com.linkedin.databus2.schemas.FileSystemSchemaRegistryService.initializeSchemaSet(FileSystemSchemaRegistryService.java:133)
    at com.linkedin.databus2.schemas.FileSystemSchemaRegistryService.build(FileSystemSchemaRegistryService.java:56)
    at com.linkedin.databus2.schemas.StandardSchemaRegistryFactory.createSchemaRegistry(StandardSchemaRegistryFactory.java:50)
    at com.linkedin.databus.container.netty.HttpRelay.<init>(HttpRelay.java:117)
    at com.linkedin.databus2.relay.DatabusRelayMain.<init>(DatabusRelayMain.java:101)
    at com.linkedin.databus.relay.example.PersonRelayServer.<init>(PersonRelayServer.java:66)
    at com.linkedin.databus.relay.example.PersonRelayServer.main(PersonRelayServer.java:109)

Any ideas about what I'm doing wrong?
Thanks!

[phanindraganti]

Hi, Peter !

        It seems like it is not able to find schemas required for starting the process. After building the package and untarring the tar ball, do you see the following four directories ?

bin
schemas_registry
conf
lib

--Phani

[psugihara]

I'm seeing

bin conf lib logs maxScn var

I gather from conf/sources-person.json that it's using the uri jdbc:oracle:thin:person/person@devdb:1521:db. Does this mean I have to have an Oracle db running for the example to work? Can I use a MySQL database?

[phanindraganti]

Hi Peter,

        The current version support Oracle only.

Thanks !
Phani

On Sun, Mar 10, 2013 at 4:39 PM, Peter Sugihara [email protected]:

I'm seeing

bin conf lib logs maxScn var

I see that in conf/sources-person.json that it's using the uri
jdbc:oracle:thin:person/person@devdb:1521:db. Does this mean I have to
have an Oracle db running for the example to work? Can I use a MySQL
database?

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/1#issuecomment-14692172
.

[phanindraganti]

Also - yes Oracle db should be running for the example to work. Having said that, it should be fairly straightfoward to write an adapter of choice that will push events into the relays and have the clients pull them out.

I am closing this ticket for now. Let us know if there are more questions.

[psugihara]

Thanks for your help, Phani. I'm currently trying to use databus to keep a couple of Rails applications in sync. I'll let you know if I run into more trouble.