Hi, After some time, bonnie++ exits too with this error message:
Can't write block.: Invalid argument Bonnie: drastic I/O error (re write(2)): Invalid argument [1]+ Exit 1 bonnie++ -s 3584 -d /hdfs/ -x5 -u hadoop -q -b -m HDFS_test > /tmp/ausgabe.txt 2>&1 This looks not so good. :-( Best Regards, Christian Am Dienstag, 6. Juli 2010 schrieb Christian Baun: > Hi, > > I installed a small Hadoop-Cluster with Cloudera CDH3. > > 2 Server are running. One is running the NameNode and DataNode. The other > server is just a DataNode. > A dedicated Client exists too. > > I want to run some performance tests with bonnie++ and iozone. > bonnie++ works but when I start iozone, it interrups. > > Is this a known issue? > > $ mount | grep hdfs > fuse_dfs on /hdfs type fuse.fuse_dfs > (rw,nosuid,nodev,allow_other,default_permissions) > > $ iozone -Rac -g 3584M -f /hdfs/testfile | tee -a /tmp/iozone_results.txt & > [1] 6283 > had...@ip-10-243-13-191:/home/ubuntu$ Iozone: Performance Test of > File I/O > Version $Revision: 3.308 $ > Compiled for 32 bit mode. > Build: linux > > Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins > Al Slater, Scott Rhine, Mike Wisner, Ken Goss > Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, > Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, > Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, > Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root. > > Run began: Tue Jul 6 16:40:35 2010 > > Excel chart generation enabled > Auto Mode > Include close in write timing > Using maximum file size of 3670016 kilobytes. > Command line used: iozone -Rac -g 3584M -f /hdfs/testfile > Output is in Kbytes/sec > Time Resolution = 0.000001 seconds. > Processor cache size set to 1024 Kbytes. > Processor cache line size set to 32 bytes. > File stride size set to 17 * record size. > random random > bkwd record stride > KB reclen write rewrite read reread read write > read rewrite read fwrite frewrite fread freread > 64 4write: Invalid argument > > Error writing block 0, fd= 3 > > iozone: interrupted > > > Best Regards, > Christian >
