Hadoop - Performance Tuning
Which data serialization format stores data in a row-wise manner and includes a schema for each record?
Which data serialization format stores data in a row-wise manner and includes a schema for each record?
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Avro's storage method
Avro stores data row-wise, meaning it saves one record at a time along with its schema.Step 2: Compare with other formats
Parquet and ORC store data column-wise, optimizing for query speed, while CSV has no schema.Final Answer:
Avro -> Option AQuick Check:
Row-wise with schema = Avro [OK]
Quick Trick: Row-wise + schema means Avro format [OK]
Common Mistakes:
- Confusing Parquet or ORC as row-wise
- Thinking CSV has schema
- Mixing storage orientation concepts
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