pinot
https://github.com/apache/pinot
Java
Apache Pinot - A realtime distributed OLAP datastore
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- Issues
- Skip block copies for spool stages whose workers are all remote
- Fail a test when a plan node field escapes the spool equivalence check
- Reduce OPEN_STRUCT realtime segment-commit cost
- Add lifecycle hooks and configs for custom partial-upsert mergers
- Push AND restrictions into composite filter children
- Collect broker statistics from the ZooKeeper metadata already watched
- Select the stats store by name and purge orphaned statistics on request
- [MSE] Build ORDER BY on SortOperator instead of SortedMailboxReceiveOperator
- Support off-heap group-by state for DISTINCTCOUNTULL (config-gated, default off)
- Add statistics contracts and broker-local stores for cost-based optimization
- Docs
- Java not yet supported