lfxy opened a new pull request, #4398: URL: https://github.com/apache/hadoop/pull/4398
[HDFS-16613](https://issues.apache.org/jira/browse/HDFS-16613) In a hdfs cluster with a lot of EC blocks, decommission a dn is very slow. The reason is unlike replication blocks can be replicated from any dn which has the same block replication, the ec block have to be replicated from the decommissioning dn. The configurations dfs.namenode.replication.max-streams and dfs.namenode.replication.max-streams-hard-limit will limit the replication speed, but increase these configurations will create risk to the whole cluster's network. So it should add a new configuration to limit the decommissioning dn, distinguished from the cluster wide max-streams limit. -- 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]
