[GitHub] [incubator-doris] kangpinghuang opened a new issue #2247: add a flag mechanism for FE to control all BEs' behaviour

[GitBox <gi...@apache.org>]

kangpinghuang opened a new issue #2247: add a flag mechanism for FE to control all BEs' behaviour
URL: https://github.com/apache/incubator-doris/issues/2247
 
 
   **Is your feature request related to a problem? Please describe.**
   Now, Doris lack a mechinism for FE to control all BEs. To solve the issue #2245 's  problem No.2, we need a ability like this to set all BE's default rowset type and compaction rowset type. This mechanism can also be used for other purposes.
   Here my basic design:
   1. add a field(maybe use binary format for extensible) in heartbeat message between FE and BE
   2. treat the flag field as bitmap, different bit stands for different function.
   3. add a http request to set the flag in FE
   4. BE can parse the flag to do the different functions.

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