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Fengnan Li edited comment on HDFS-14118 at 1/9/19 6:23 PM: ----------------------------------------------------------- Thanks for the comments and pointers [~elgoiri]! One thing I don't understand in your comment forĀ [HDFS-13312|https://issues.apache.org/jira/browse/HDFS-13312] is that it will affect a lot of components. Do you refer to that DN will need this approach as well? DNS strategy here is pretty straightforward for us. Internally we also discussed a lot about which way we should go, and DNS is our final choice. was (Author: fengnanli): Thanks for the comments and pointers [~elgoiri]! One thing I don't understand in your comment forĀ [link HDFS-13312|https://issues.apache.org/jira/browse/HDFS-13312] is that it will affect a lot of components. Do you refer to that DN will need this approach as well? DNS strategy here is pretty straightforward for us. Internally we also discussed a lot about which way we should go, and DNS is our final choice. > RBF: Use DNS to help resolve routers > ------------------------------------ > > Key: HDFS-14118 > URL: https://issues.apache.org/jira/browse/HDFS-14118 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: Fengnan Li > Assignee: Fengnan Li > Priority: Major > Attachments: HDFS-14118.patch > > > Clients will need to know about routers to talk to the HDFS cluster > (obviously), and having routers updating (adding/removing) will have to make > every client change, which is a painful process. > DNS can be used here to resolve the single domain name clients knows to a > list of routers in the current config. However, DNS won't be able to consider > only resolving to the working router based on certain health thresholds. > There are some ways about how this can be solved. One way is to have a > separate script to regularly check the status of the router and update the > DNS records if a router fails the health thresholds. In this way, security > might be carefully considered for this way. Another way is to have the client > do the normal connecting/failover after they get the list of routers, which > requires the change of current failover proxy provider. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org