NCCI Online Rebuild

Niko Neugebauer notes a big improvement in vNext:

For the Columnstore Indexes, the only online operation for the indexes that was available so far, was the Row Group Merging and Removal with ALTER INDEX REORGANIZE (as well as the Tuple Mover operations). With appearance of HTAP scenarios (Hybrid Transactional Analytical Processing aka Operational Analytics) in SQL Server 2016, there was a huge need for the online index maintenance, making sure that the operational part of the HTAP runs smoothly. For any online business, taking their application down for an hour means loosing real money and even worse – loosing credibility from their customers. To my knowledge, Microsoft was very much aware and was working on improving this missing part.
For the SQL Server vNext version (after SQL Server 2016) in CTP 1.2, yesterday, we have finally received the first Online Rebuild operation for the Columnstore Indexes – in this case for the Nonclustered Columnstore Indexes, and this is a huge news for anyone using the HTAP scenarios.
Naturally this feature is Enterprise Edition Only, and like ever before – if you are running a critical workload, you need to step up and use the Enterprise Edition.

Online clustered columnstore reorganization in 2016 was a life-saver, and I’m looking forward to online clustered columnstore rebuilding at some point in the future.

Related Posts

Parameter Sniffing and Multiple Indexes

Erik Darling looks at how available indexes may contribute to parameter sniffing problems: When you’re troubleshooting parameter sniffing, the plans might not be totally different. Sometimes a subtle change of index usage can really throw gas on things. It’s also a good example of how Key Lookups aren’t always a huge problem. Both plans had […]

Read More

Statistics and Multiple Single-Column Indexes

Erik Darling is fusing together queries like Dr. Frankenstein in his lab: You may have noticed that both queries get pretty bad estimates. You might even be thinking about leaving me a comment to update stats. The thing is that I created these indexes, which means they get stats built with a full scan, and […]

Read More

Categories

January 2017
MTWTFSS
« Dec Feb »
 1
2345678
9101112131415
16171819202122
23242526272829
3031