[ https://issues.apache.org/jira/browse/HDFS-15599?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Fengnan Li reassigned HDFS-15599: --------------------------------- Assignee: Qifan Shi > RBF: Add API to expose resolved destinations (namespace) in Router > ------------------------------------------------------------------ > > Key: HDFS-15599 > URL: https://issues.apache.org/jira/browse/HDFS-15599 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Fengnan Li > Assignee: Qifan Shi > Priority: Major > > We have seen quite often requests like where a path in Router is actually > pointed. Two main use cases are: > 1) Calculate the HDFS capacity usage allocation of all Hive tables, whose > have onboarded to Router. > 2) A failure prevention method for cross-cluster rename. First check the > source HDFS location and dest HDFS location, and then issue a distcp cmd if > possible to avoid the Exception. > Inside Router, the function getLocationsForPath does the work but it is > internal only and not visible to Clients. > RouterAdmin has getMountTableEntries but this is a cast of Mount table > without any resolving. > > We are proposing adding such an API, and there are two ways: > 1) Adding this API in RouterRpcServer, which requires the change in > ClientNameNodeProtocol to include this new API. > 2) Adding this API in RouterAdminServer, which requires the a protocol > between Client and the admin server. > > There is one existing resolvePath in FileSystem which can be used to > implement this call from client side. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org