On Tue, Nov 9, 2010 at 6:29 AM, Wojciech Langiewicz wrote: > > What might be causing situation where I have about 5TB in HDFS and hadoop > tmp dirs have about 16TB in total? > If indeed this is the block data of your HDFS files, then this makes perfect sense. HDFS by default replicates every block 3 times, so ~5TB used in HDFS is ~15TB raw on disk. Aaron