DataNodes track it. See and trace the volumeMap, https://github.com/apache/hadoop-common/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java#L172
On Fri, Jul 19, 2013 at 5:22 AM, John Lilley <[email protected]> wrote: > In HDFS, who tracks the filesystem path on the datanode of each block? The > namenode or the datanode? If datanode, where is that table stored? > > John > > -- Harsh J
