Error starting Apache Drill in Embedded Mode on Windows 10

Question

I am trying to start Apache Drill 1.10 in Embedded Mode on Windows 10 x64 (with Oracle JVM 1.8.0_131). When launching the command

sqlline.bat -u "jdbc:drill:zk=local"

I get the following:

Error during udf area creation [/C:/Users/<user>/drill/udf/registry] on file system [file:///] (state=,code=0)

So, after some googling, I have changed the drill-override.conf file this way:

drill.exec: {
  cluster-id: "drillbits1",
  zk.connect: "localhost:2181",
  udf: {
    # number of retry attempts to update remote function registry
    # if registry version was changed during update
    retry-attempts: 10,
    directory: {
      # Override this property if custom file system should be used to create remote directories
      # instead of default taken from Hadoop configuration
      fs: "file:///",
      # Set this property if custom absolute root should be used for remote directories
      root: "/c:/work"
    }
  }
}

Then I have checked the following:

• proper permission set on the folder
• console started as an Administrator

But I still get the same error:

Error during udf area creation [/c:/work/drill/udf/registry] on file system [file:///] (state=,code=0)

I can't disable UDF since I don't have an active connection.

Any suggestions?

Answer 1

Seems to be related to ownership of the folders, as per this link. Details of the solution from the link are quoted as follows

Run these commands before the first time you are running sqlline.bat.

mkdir %userprofile%\drill

mkdir %userprofile%\drill\udf

mkdir %userprofile%\drill\udf\registry

mkdir %userprofile%\drill\udf\tmp

mkdir %userprofile%\drill\udf\staging

takeown /R /F %userprofile%\drill