huangzhaobo99 commented on PR #7120: URL: https://github.com/apache/hadoop/pull/7120#issuecomment-2422243631
> Good idea. Only one concerns, if give one small limitTopNodes is it possible to impact DataNode service when trigger balancer. Such as one corner case, given set limitTopNodes=1 and there are thousands underUtilized nodes, then the top one datanode will involve transfer flood, right? So IMO we should give some caution information to end user at least. FYI. Thanks. Similar to using the '-source' param, top one datanode will involve transfer flood, this corner case will continue to migrate data from the node until the conditions for Balance are met. However, the blocks and speed of each migration are affected by other params, and the impact on the cluster is controllable. -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
