srowen commented on a change in pull request #24702: [SPARK-27989] [Kubernetes] [Core] Added retries on the connection to the driver for k8s URL: https://github.com/apache/spark/pull/24702#discussion_r292002632
########## File path: resource-managers/kubernetes/docker/src/main/dockerfiles/spark/Dockerfile ########## @@ -51,6 +51,8 @@ ENV SPARK_HOME /opt/spark WORKDIR /opt/spark/work-dir RUN chmod g+w /opt/spark/work-dir +#Disable negative dns reslolution https://docs.oracle.com/javase/8/docs/technotes/guides/net/properties.html +RUN sed -i -e 's/networkaddress.cache.negative.ttl=10/networkaddress.cache.negative.ttl=0/g' /usr/lib/jvm/java-1.8-openjdk/jre/lib/security/java.security Review comment: The default seems to be networkaddress.cache.negative.ttl = 10 or 10 seconds. Never caching might be better, but we don't do this anywhere else and seems like something that can be left to the user. Yeah OK it isn't a different property you're talking about and does seem only settable in the security props file, which isn't easy. Never caching or caching for 10 seconds probably won't affect whether 1 or 3 tries fails or succeeds here, if that's the issue. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
