zentol commented on a change in pull request #9558: [FLINK-13892][hs] Harden 
HistoryServerTest
URL: https://github.com/apache/flink/pull/9558#discussion_r320730108
 
 

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 File path: 
flink-runtime-web/src/test/java/org/apache/flink/runtime/webmonitor/history/HistoryServerTest.java
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 @@ -131,11 +132,11 @@ public void testHistoryServerIntegration() throws 
Exception {
                        archives = jmDirectory.listFiles();
 
 Review comment:
   With the current settings it can speed things up since the first poll of the 
HS is more likely to fetch all archives.
   
   Another benefit is that it is easier to tell whether the archiving has 
failed or not. Without the first loop, if the archiving on the JM fails the HS 
we'd never execute the callback; in this case we'd only know that _something_ 
went wrong. With the dedicated loop to check the JM archiving it is easier to 
pinpoint which component is experiencing problems.

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