Change noteburst maxConcurrentJobs to 1

This seems better because the JupyterLab notebook execution endpoint is
synchronous, so we may need to also run the noteburst jobs
synchronously.

applications/noteburst/README.md

@@ -25,7 +25,7 @@ Noteburst is a notebook execution service for the Rubin Science Platform.
 | config.worker.imageSelector | string | `"recommended"` | Nublado image stream to select: "recommended", "weekly" or "reference" |
 | config.worker.jobTimeout | int | `300` | The default notebook execution timeout, in seconds. |
 | config.worker.keepAlive | string | `"normal"` | Worker keep alive mode: "normal", "fast", "disabled" |
-| config.worker.maxConcurrentJobs | int | `3` | Max number of concurrent notebook executions per worker |
+| config.worker.maxConcurrentJobs | int | `1` | Max number of concurrent notebook executions per worker |
 | config.worker.tokenLifetime | string | `"2419200"` | Worker token lifetime, in seconds. |
 | config.worker.tokenScopes | string | `"exec:notebook,read:image,read:tap,read:alertdb"` | Nublado2 worker account's token scopes as a comma-separated list. |
 | config.worker.workerCount | int | `1` | Number of workers to run |

applications/noteburst/values.yaml

@@ -123,7 +123,7 @@ config:
     jobTimeout: 300
 
     # -- Max number of concurrent notebook executions per worker
-    maxConcurrentJobs: 3
+    maxConcurrentJobs: 1
 
     # -- Worker token lifetime, in seconds.
     tokenLifetime: "2419200"