Details
-
Improvement
-
Status: Closed
-
Minor
-
Resolution: Fixed
-
None
-
None
-
None
-
None
Description
Adding more schema design information. Consolidated the "performance" related schema options in the performance chapter so there wouldn't be explanations of these concepts in both the Schema Design chapter and also the Performance chapter.
book.xml
- schema design chapter: moved the in-memory CF option, and bloom filter to the Peformance chapter's schema design section.
- added link to performance chapter schema design section in Schema Design chapter.
- added comment that online schema changes will be available in .92 (for an example where it shows a table being disabled for a CF change)
performance.xml
- added the in-memory CF option and bloom filter reference from book.xml (see above)
- added sub-section on per-table regionsize configuration.
- added subsection on blocksize configuration.
- clarified entry on regionsizes and made it clear that large 20gb regions are only for HFile v2 format, whereas the largest HFile v1 format region is somewhere around 4gb.