[GitHub] [doris] chenlinzhong opened a new pull request, #11752: [remote-udaf](java-sample) impl some udaf demo with java

[GitBox]

chenlinzhong opened a new pull request, #11752:
URL: https://github.com/apache/doris/pull/11752

   # Proposed changes
   
   Issue Number: close #xxx
   
   ## Problem summary
   
   add rpc-udaf  java demo
   
    
   
   ## Checklist(Required)
   ```
   CREATE TABLE `table2` (
     `event_day` date NULL,
     `siteid` int(11) NULL DEFAULT "10",
     `citycode` smallint(6) NULL,
     `username` varchar(32) NULL DEFAULT "",
     `pv` bigint(20) SUM NULL DEFAULT "0"
   ) ENGINE=OLAP
   AGGREGATE KEY(`event_day`, `siteid`, `citycode`, `username`)
   COMMENT 'OLAP'
   DISTRIBUTED BY HASH(`siteid`) BUCKETS 10
   PROPERTIES (
   "replication_allocation" = "tag.location.default: 1",
   "in_memory" = "false",
   "storage_format" = "V2"
   )
   ```
   import 100w rows data to table
   
   ### create remote rpc udaf 
   ```
   CREATE AGGREGATE FUNCTION  rpc_avg(int) RETURNS double PROPERTIES (
       "TYPE"="RPC",
       "OBJECT_FILE"="127.0.0.1:9700",
       "update_fn"="rpc_avg_update",
       "merge_fn"="rpc_avg_merge",
       "finalize_fn"="rpc_avg_finalize"
   );
   ```
   
   
![image](https://user-images.githubusercontent.com/11487604/184467484-c9efb24a-32ff-4e55-a332-b0bb251d594b.png)
   
   
   
   
   1. Does it affect the original behavior: 
       - [ ] Yes
       - [ ] No
       - [ ] I don't know
   2. Has unit tests been added:
       - [ ] Yes
       - [ ] No
       - [ ] No Need
   3. Has document been added or modified:
       - [ ] Yes
       - [ ] No
       - [ ] No Need
   4. Does it need to update dependencies:
       - [ ] Yes
       - [ ] No
   5. Are there any changes that cannot be rolled back:
       - [ ] Yes (If Yes, please explain WHY)
       - [ ] No
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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