Hey Gokul,
Sandbox is a single node cluster, you can’t create more. You can run Falcon in a single node cluster too (by having src and detn in 2 different locations in hdfs), just check out the tutorial and code.
The resolution for this problem is trivial. Create primaryCluster/backupCluster directories in HDFS in the same path as mentioned in the xml file and provide necessary permissions. If you get an error like “directory not owned by Falcon” create the directory as falcon user (su falcon) and provide 755 permission to that directory.
Works! as expected.
Cheers!