Apache Druid Interview Questions and Answers

+1 vote

Zookeeper is used for _____.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

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Select the processes which store queryable data.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

0 votes

Each segment starts off being created on a MiddleManager, and at that point the segment is _____.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

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________ is the mechanism by which the segments are published and are served by historical process.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

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Periodically, segments are committed and published. At this point, they are written to deep storage, become immutable.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

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TopN queries can use HAVING conditions over aggregated data.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

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Which of the following queries are grouped by single dimension, and are sorted according to the metric?

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

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Druid data is stored in "datasources", similar to _____.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

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Which of the following is an example of a SELECTOR filter?

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

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For ease of deployment, Druid suggests organizing processes into ________ server types.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

For grouping and sorting over a single dimension, _______ queries are much more optimized than _________.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

0 votes

Segment IDs in Apache Druid are comprised of________.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

Among the following options, which aggregation query is the most flexible but has the poorest performance?

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

In Apache Druid, Scan queries do not support pagination.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

In case of a Druid server failure, data can be recovered from _____.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

Which option controls the number of rows returned in each block of paginated results?

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

Which of the following query is not included in Aggregation query?

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

Which of the following concept in Druid optionally replaces dimensional values with new values, enabling combined functionality?

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

Which of the following Granularity types are supported in Apache Druid?

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

Which of the following is used to interpret input data in Druid?

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

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_____ is responsible for allocating segments to specific servers, and ensuring that segments are well balanced across Historicals.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

The ____________ receives requests from outside customers, and transmits these requests to data servers.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

Apache Druid uses _____ compressed bitmap indexes to create indexes.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

Which of the following external dependencies is used to backup and transfer data from Druid processes in the background?

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

Denormalized data in Apache Druid is ingested in _________ formats.

answered Dec 29, 2021 in Apache Druid by sharadyadav1986

+1 vote

Which of the following is the core element of a Druid ingestion Spec?

answered Dec 28, 2021 in Apache Druid by sharadyadav1986

+1 vote

Which of the following is a datasource type in Apache Druid?

answered Dec 28, 2021 in Apache Druid by sharadyadav1986

+1 vote

The _____ manages new data ingestion.

answered Dec 28, 2021 in Apache Druid by sharadyadav1986

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Which of the following is the default GroupBy query strategy.

answered Dec 28, 2021 in Apache Druid by sharadyadav1986

+1 vote

Predict the output.

answered Dec 28, 2021 in Apache Druid by sharadyadav1986

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