[GitHub] [jackrabbit-oak] nfsantos opened a new pull request, #1093: OAK-10423 - Improve logging of metrics in the indexing job

[via GitHub]

nfsantos opened a new pull request, #1093:
URL: https://github.com/apache/jackrabbit-oak/pull/1093

   For each phase/task of the indexing job, log messages at the start and end 
following a standard format. The messages at the end include metrics in JSON 
format. 
   
   Example:
   ```
   16:32:53.847 INFO  [mongo-dump] PipelinedMongoDownloadTask.java:131 
[TASK:MONGO-DUMP:START] Starting to download from MongoDB.
   ...
   16:32:53.866 INFO  [mongo-dump] PipelinedMongoDownloadTask.java:203 
[TASK:MONGO-DUMP:END] Metrics: 
{"duration":"01:32:12","durationSeconds":5532,"documentsDownloaded":187187476,"enqueueingDelayMs":45,"enqueueingDelayPercentage":"0.00"}
   ```


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