Questions about QDS Clusters

The topics that follow provide answers to questions commonly asked about QDS clusters:

• 1. Why didn’t my cluster come up?
• 2. How long does a Qubole Hadoop Cluster take to come up?
• 3. In whose account are clusters launched?
• 4. When are clusters brought up and shut down?
• 5. When are clusters auto-scaled?
• 6. Should I have one large auto-scaling cluster or multiple smaller clusters?
• 7. Are files from a Hadoop archive extracted to a specific folder by default?
• 8. Will HDFS be affected by cluster auto-scaling?
• 9. How do I check if a node is a master node or a worker node?
• 10. Does Qubole store any data?
• 11. Can the data stored on a Cloud instance be encrypted?
• 12. Can I use Python 2.7 for Hadoop tasks?
• 13. Why are so many idle mappers seen on an Hadoop Cluster?
• 14. Can I submit Hive Commands to a Spark Cluster and is it supported?
• 15. Do I need to bake a Paravirtual Image for bringing up the clusters?