Improved EXAStorage Random Read Performance (Hybrid Block Distribution)
Details
| Detail name | Value |
|---|---|
| Changelog Number | 55 |
| Type | Improvement |
| Status | Resolved |
| Fix Versions | EXASOL 6.0.0, EXASOL 6.0.beta3 |
| Resolution Date | 2016-12-05 |
For newly created volumes, the read performance is improved based on an optimized physical storage layout.
The read performance will be improved,in particular, in the following cases:
- Read operations on big and heavily fragmented data volumes
- Out-of-memory multi-user-scenarios, i.e. a lot of clients concurrently read from the same data volume
This improvement will be active for newly created volume only. There is no way to apply this optimization to exisiting volumes. That's why we recommend to use a newly created volume when switching to 6.0 (despite the longer downtime). A warning will be displayed at each database restart if a data volume with old layout is used after switching to 6.0.
