9/16/2023 0 Comments Snappy compression format![]() Snappy originally made the trade-off going for faster compression and decompression times at the expense of higher compression ratios. S2 is an extension of Snappy, a compression library Google first released back in 2011. But, if the payload is already encrypted or wrapped in a digital rights management container, compression is unlikely to achieve a strong compression ratio so decompression time should be the primary goal. If you're releasing a large software patch, optimising the compression ratio and decompression time would be more in the users' interest. The four major points of measurement are (1) compression time (2) compression ratio (3) decompression time and (4) RAM consumption. set ( ".class", ". algorithms are designed to make trade-offs in order to optimise for certain applications at the expense of others. Updated by Hive or other external tools, you need to refresh them manually to ensure consistent ![]() When Hive metastore Parquet tableĬonversion is enabled, metadata of those converted tables are also cached. Spark SQL caches Parquet metadata for better performance.
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