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Jing Zhao commented on HDFS-7878: --------------------------------- bq. dfs.getClient().getFileInfo(path) yes, then you can use /.reserved/<fileId> to visit that file. Unfortunately both this API and HdfsFileStatus are now private inside of HDFS. > API - expose an unique file identifier > -------------------------------------- > > Key: HDFS-7878 > URL: https://issues.apache.org/jira/browse/HDFS-7878 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Sergey Shelukhin > > See HDFS-487. > Even though that is resolved as duplicate, the ID is actually not exposed by > the JIRA it supposedly duplicates. > INode ID for the file should be easy to expose; alternatively ID could be > derived from block IDs, to account for appends... > This is useful e.g. for cache key by file, to make sure cache stays correct > when file is overwritten. -- This message was sent by Atlassian JIRA (v6.3.4#6332)