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Optimization techniques in Spark involve tuning parameters, partitioning data, and using caching.
Tune parameters like memory allocation, parallelism, and shuffle partitions for better performance
Partition data to distribute workload evenly across nodes
Use caching to store intermediate results in memory for faster access
Examples: repartition(), cache(), persist() functions in Spark
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I was interviewed in Aug 2017.
I was interviewed in Sep 2016.
I applied via Walk-in and was interviewed before Sep 2020. There were 3 interview rounds.
BI tools are software applications used to analyze and visualize data to help businesses make informed decisions.
BI tools can extract data from various sources and transform it into meaningful insights.
They can create interactive dashboards and reports to present data in a user-friendly way.
Examples of BI tools include Tableau, Power BI, and QlikView.
BI tools can help businesses identify trends, patterns, and opportuni...
I applied via Walk-in and was interviewed in Mar 2020. There was 1 interview round.
I applied via Naukri.com and was interviewed in Jun 2020. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in Mar 2021. There were 3 interview rounds.
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