Re: HDFS blockIDs vs paths

2013-07-18 Thread Harsh J
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

2013-07-18 Thread John Lilley
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