Re:PostgreSQL columnar store benchmarks on SSDs
by bredman on Wednesday June 04, 2014 @02:16PM
(#7847193)
Ben from CitusData here.
At a high level columnar stores are good for analytical workloads and not great for OLTP workloads. Some reasons for this:
* cstore_fdw currently only supports modifying data via the COPY command. This means that UPDATE and DELETE operations aren't yet possible which limits the utility for OLTP workloads.
* The skiplist indexing system works well for analytical workloads where you are aggregating or retrieving a significant number of rows but wouldn't be great for retrieving single rows.
At a high level columnar stores are good for analytical workloads and not great for OLTP workloads. Some reasons for this:
* cstore_fdw currently only supports modifying data via the COPY command. This means that UPDATE and DELETE operations aren't yet possible which limits the utility for OLTP workloads.
* The skiplist indexing system works well for analytical workloads where you are aggregating or retrieving a significant number of rows but wouldn't be great for retrieving single rows.