[jira] [Commented] (HDFS-14728) RBF：GetDatanodeReport causes a large GC pressure on the NameNodes

[ https://issues.apache.org/jira/browse/HDFS-14728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16906396#comment-16906396 ] Íñigo Goiri commented on HDFS-14728: A few comments: * I think the unit tests are having some issues.

[jira] [Commented] (HDFS-14728) RBF：GetDatanodeReport causes a large GC pressure on the NameNodes

[ https://issues.apache.org/jira/browse/HDFS-14728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16906217#comment-16906217 ] Hadoop QA commented on HDFS-14728: -- | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem ||

[jira] [Commented] (HDFS-14728) RBF：GetDatanodeReport causes a large GC pressure on the NameNodes

[ https://issues.apache.org/jira/browse/HDFS-14728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16906074#comment-16906074 ] xuzq commented on HDFS-14728: - Thanks [~zhangchen]. I think we can cache the datanode report in

[jira] [Commented] (HDFS-14728) RBF：GetDatanodeReport causes a large GC pressure on the NameNodes

[ https://issues.apache.org/jira/browse/HDFS-14728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16906049#comment-16906049 ] Chen Zhang commented on HDFS-14728: --- NamenodeBeanMetrics has implemented a dnCache to cache DataNode