Hadoop - Performance Tuning
What will be the output size comparison when compressing the same dataset with Snappy and Gzip codecs in Hadoop?
What will be the output size comparison when compressing the same dataset with Snappy and Gzip codecs in Hadoop?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Recall compression ratio differences
Gzip achieves higher compression ratio, so output files are smaller.Step 2: Compare Snappy and Gzip outputs
Snappy compresses faster but results in larger files than Gzip.Final Answer:
Gzip compressed file is smaller than Snappy compressed file -> Option CQuick Check:
Gzip smaller output than Snappy [OK]
Quick Trick: Gzip compresses smaller than Snappy [OK]
Common Mistakes:
- Thinking Snappy compresses smaller
- Assuming same size output
- Believing Snappy fails on large data
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