jojochuang commented on code in PR #10354:
URL: https://github.com/apache/ozone/pull/10354#discussion_r3304398892


##########
hadoop-ozone/dist/src/shell/ozone/ozone-functions.sh:
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@@ -1420,6 +1420,17 @@ function ozone_java_setup
     
RATIS_OPTS="-Dorg.apache.ratis.thirdparty.io.netty.tryReflectionSetAccessible=true
 ${RATIS_OPTS}"
   fi
 
+  # Opt-in caps on Netty's pooled direct-memory arena (HDDS-11234). Two
+  # properties are needed because Ozone runs both the unshaded io.netty
+  # *and* the Ratis-shaded copy in the same JVM, each with its own
+  # independent ceiling.

Review Comment:
   we might be able to simplify it after #10030 which supposedly migrates gRPC 
usage to Ratis-shaded gRPC.



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