You are viewing a plain text version of this content. The canonical link for it is here.

Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2022/02/16 09:35:09 UTC

[GitHub] [iotdb] ericpai commented on pull request #5063: [IOTDB-2543] Support le & lt filters in last query

ericpai commented on pull request #5063:
URL: https://github.com/apache/iotdb/pull/5063#issuecomment-1041292154


   Need to update the docs.  As we have two scenarios of `LAST` query now:
   1. Query with only time filters `>` AND `>=` or without any filters: IoTDB will try to get from the last cache first and then tsfile, and then update the cache.
   2. Query with time filters '<' or any other composed ones: It will query the tsfile directly without updating the cache.
   
   We should let users know the difference of the performace impact of them. And leave the choice to users. The `LAST` keyword in 2 is just a syntax sugar.


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: reviews-unsubscribe@iotdb.apache.org

For queries about this service, please contact Infrastructure at:
users@infra.apache.org