Answer / Siddharth Kumar Srivastava

Impala is an open-source Massive Parallel Processing (MPP) SQL query engine designed for interactivity on Apache Hadoop. Its main features include: n1. Direct SQL Querying: Impala allows users to run SQL queries directly against data stored in HDFS without the need for MapReduce jobs.n2. Low-Latency Query Execution: Impala provides fast query response times, making it suitable for interactive analytics.n3. Integration with Hive: Impala can be used as a standalone service or integrated with Apache Hive, enabling users to run queries written in HiveQL.n4. Scalability: Impala is highly scalable and can handle petabyte-scale data.n5. Support for user-defined functions (UDFs) and subqueries.

What are the differences between relational databases and impala?

1 Answers  

---

Can I do trforms or add new functionality?

1 Answers  

---

Is there a dual table?

1 Answers  

---

Compare hive, hbase, and impala?

1 Answers  

---

Does impala use caching?

1 Answers  

---

How does impala compare to hive and pig?

1 Answers  

---

On which hosts does impala run?

1 Answers  

---

Can I use impala to query data already loaded into hive and hbase?

1 Answers  

---

How much memory is required?

1 Answers  

---

What size is recommended for each node?

1 Answers  

---

Does impala support generic jdbc?

1 Answers  

---

Why does my select statement fail?

1 Answers  

---