thinker0 commented on issue #3382: Support Java 11
URL: https://github.com/apache/incubator-heron/pull/3382#issuecomment-552168517
 
 
   
https://github.com/apache/incubator-heron/blob/master/heron/executor/src/python/heron_executor.py#L436-L449
   
   
https://github.com/apache/incubator-heron/blob/master/heron/executor/src/python/heron_executor.py#L476-L490
   
   From 1.9 and above, it should change as follows.
   
   ```
   -Xlog:gc=info:file=${APP}/logs/gc.log.$(/bin/date 
+%Y-%m-%d-%H%M%S):time,uptime,pid:filecount=5,filesize=4096
   ```
   
   - 
https://medium.com/hotels-com-technology/what-to-do-about-the-garbage-collector-when-moving-from-java-8-to-java-11-71e60f9b81f
   - https://dzone.com/articles/disruptive-changes-to-gc-logging-in-java-9

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