dasahcc commented on a change in pull request #1231:
URL: https://github.com/apache/helix/pull/1231#discussion_r468184045



##########
File path: helix-core/src/main/java/org/apache/helix/task/JobConfig.java
##########
@@ -147,10 +147,17 @@
     StartTime,
 
     /**
-     * The expiration time for the job
+     * The expiration time for the job if it's completed; once the expiry is 
reached and the job is
+     * completed, the job will be purged
      */
     Expiry,
 
+    /**
+     * The expiration time for the job if it's failed or timed out; once the 
expiry is reached and
+     * the job has failed or timed out, the job will be purged
+     */
+    TerminalStateExpiry,

Review comment:
       Then there could be too many expiry to configured by user. Even if we 
want to support this at per job level, we need a boolean flag to show whether 
we should clean them after expiry when it fails or timed out. From time 
perspective, I dont think user has any difference with time number.
   
   But from user migration perspective, adding to job level is very cost and 
roll out.




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