Re: HDFS blockIDs vs paths
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 wrote: > In HDFS, who tracks
HDFS blockIDs vs paths
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