Apache Impala Interview Questions
Questions Answers Views Company eMail

How is impala metadata managed?

36

What size is recommended for each node?

188

What impala use for authentication?

38

Can impala do user-defined functions (udfs)?

35

What is used to store data generally?

39

State use cases of impala?

45

How do I load a big csv file into a partitioned table?

42

How does impala process join queries for large tables?

43

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

36

What happens if there is an error in impala?

119

Is it possible to share data files between different components?

35

Does if offer scaling?

31

Is there a dual table?

42

What load do concurrent queries produce on the namenode?

47

How can it help for avoiding costly modeling?

36


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Un-Answered Questions { Apache Impala }

Can impala be used for complex event processing?

156


What kinds of impala queries or data are best suited for hbase?

44


How is impala metadata managed?

36


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

98


How does impala achieve its performance improvements?

33


Does cloudera offer a vm for demonstrating impala?

43


Describe impala shell (impala-shell command)?

40


How does impala process join queries for large tables?

43


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

47


Does impala use caching?

44


What are the names of daemons in impala?

45


How do I try impala out?

54


What happens when the data set exceeds available memory?

89


Can any impala query also be executed in hive?

80


When does impala hold on to or return memory?

74