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https://phoenix.apache.org/docs/features/row-timestamp-column
Row Timestamp Column
Map HBase row timestamps to a Phoenix primary-key column and use ROW_TIMESTAMP in table design and upserts
https://phoenix.apache.org/docs/features/table-sampling
Given a sampling rate, it leverages Phoenix statistics and HBase region distribution to perform table sampling
https://phoenix.apache.org/docs/features/skip-scan
How Phoenix Skip Scan uses key-range hints to efficiently skip non-matching row-key regions
https://phoenix.apache.org/docs/features/dynamic-columns
Define and query late-bound dynamic columns in Phoenix when full schema cannot be declared upfront
https://phoenix.apache.org/docs/features/ttl
Phoenix supports per-row time-to-live (TTL) so that rows can be expired and removed without an application-issued DELETE
https://phoenix.apache.org/docs/quick-start
Check out my presentation for various existing and to-be-done Phoenix features to support your favorite HBase trick
https://phoenix.apache.org/docs/fundamentals/performance
In addition, to minimize startup costs, Phoenix uses native HBase APIs rather than going through the MapReduce framework