Answer / Shi Singh

"Impala works with CDH (Cloudera Distribution for Hadoop) by integrating with the HDFS and HBase layers. It provides SQL-like queries on both HDFS and HBase data."n

Does impala use caching?

1 Answers  

---

When does impala hold on to or return memory?

1 Answers  

---

Why do I have to use refresh and invalidate metadata, what do they do?

1 Answers  

---

Is there an update statement?

1 Answers  

---

What impala use for authentication?

1 Answers  

---

How are joins performed in impala?

1 Answers  

---

Does impala performance improve as it is deployed to more hosts in a cluster in much the same way that hadoop performance does?

1 Answers  

---

What load do concurrent queries produce on the namenode?

1 Answers  

---

Does cloudera offer a vm for demonstrating impala?

1 Answers  

---

Can I do insert … select * into a partitioned table?

1 Answers  

---

Are results returned as they become available, or all at once when a query completes?

1 Answers  

---

What does impala do for fast access?

1 Answers  

---