id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,active_lock_reason,draft,pull_request,body,reactions,performed_via_github_app,state_reason,repo,type
1522810384,PR_kwDOAMm_X85G1P52,7424,array api - Add tests for aggregations,14371165,open,0,,,3,2023-01-06T16:10:05Z,2023-04-20T13:37:13Z,,MEMBER,,1,pydata/xarray/pulls/7424,"<!-- Feel free to remove check-list items aren't relevant to your change -->

- [ ] Closes #7243
- [x] Tests added
- [ ] User visible changes (including notable bug fixes) are documented in `whats-new.rst`
- [ ] New functions/methods are listed in `api.rst`
","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/7424/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull
1523232313,PR_kwDOAMm_X85G2q5I,7426,Add lazy backend ASV test,14371165,closed,0,,,1,2023-01-06T22:01:26Z,2023-01-12T16:00:05Z,2023-01-11T18:56:25Z,MEMBER,,0,pydata/xarray/pulls/7426,"This tests xr.open_dataset without any slow file reading that can quickly become the majority of the performance time.

Related to #7374.


Timings for the new ASV-tests:
```

[ 50.85%] ··· dataset_io.IOReadCustomEngine.time_open_dataset                 ok
[ 50.85%] ··· ======== ============
               chunks              
              -------- ------------
                None     265±4ms   
                 {}     1.17±0.02s 
              ======== ============
[ 54.69%] ··· dataset_io.IOReadSingleFile.time_read_dataset                   ok
[ 54.69%] ··· ========= ============= =============
              --                   chunks          
              --------- ---------------------------
                engine       None           {}     
              ========= ============= =============
                scipy     4.81±0.1ms   6.65±0.01ms 
               netcdf4   8.41±0.08ms    10.9±0.2ms 
              ========= ============= =============
```
From the IOReadCustomEngine test we can see that chunking datasets with many variables (2000+) is considerably slower.","{""url"": ""https://api.github.com/repos/pydata/xarray/issues/7426/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,,13221727,pull