If the server is dedicated to this job, you might as well give it 10-15g. After that shakes out, try changing the number of mappers & reducers.
On Tue, Aug 9, 2011 at 2:06 AM, Xiaobo Gu <[email protected]> wrote: > Hi Adi, > > Thanks for your response, on an SMP server with 32G RAM and 8 Cores, > what's your suggestion for setting HADOOP_HEAPSIZE, the server will be > dedicated for a Single Node Hadoop with 1 data node instance, and the > it will run 4 mapper and reducer tasks . > > Regards, > > Xiaobo Gu > > > On Sun, Aug 7, 2011 at 11:35 PM, Adi <[email protected]> wrote: >>>>Caused by: java.io.IOException: error=12, Not enough space >> >> You either do not have enough memory allocated to your hadoop daemons(via >> HADOOP_HEAPSIZE) or swap space. >> >> -Adi >> >> On Sun, Aug 7, 2011 at 5:48 AM, Xiaobo Gu <[email protected]> wrote: >> >>> Hi, >>> >>> I am trying to write a map-reduce job to convert csv files to >>> sequencefiles, but the job fails with the following error: >>> java.lang.RuntimeException: Error while running command to get file >>> permissions : java.io.IOException: Cannot run program "/bin/ls": >>> error=12, Not enough space >>> at java.lang.ProcessBuilder.start(ProcessBuilder.java:460) >>> at org.apache.hadoop.util.Shell.runCommand(Shell.java:200) >>> at org.apache.hadoop.util.Shell.run(Shell.java:182) >>> at >>> org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:375) >>> at org.apache.hadoop.util.Shell.execCommand(Shell.java:461) >>> at org.apache.hadoop.util.Shell.execCommand(Shell.java:444) >>> at >>> org.apache.hadoop.fs.RawLocalFileSystem.execCommand(RawLocalFileSystem.java:540) >>> at >>> org.apache.hadoop.fs.RawLocalFileSystem.access$100(RawLocalFileSystem.java:37) >>> at >>> org.apache.hadoop.fs.RawLocalFileSystem$RawLocalFileStatus.loadPermissionInfo(RawLocalFileSystem.java:417) >>> at >>> org.apache.hadoop.fs.RawLocalFileSystem$RawLocalFileStatus.getOwner(RawLocalFileSystem.java:400) >>> at >>> org.apache.hadoop.mapred.TaskLog.obtainLogDirOwner(TaskLog.java:176) >>> at >>> org.apache.hadoop.mapred.TaskLogsTruncater.truncateLogs(TaskLogsTruncater.java:124) >>> at org.apache.hadoop.mapred.Child$4.run(Child.java:264) >>> at java.security.AccessController.doPrivileged(Native Method) >>> at javax.security.auth.Subject.doAs(Subject.java:396) >>> at >>> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1059) >>> at org.apache.hadoop.mapred.Child.main(Child.java:253) >>> Caused by: java.io.IOException: error=12, Not enough space >>> at java.lang.UNIXProcess.forkAndExec(Native Method) >>> at java.lang.UNIXProcess.<init>(UNIXProcess.java:53) >>> at java.lang.ProcessImpl.start(ProcessImpl.java:65) >>> at java.lang.ProcessBuilder.start(ProcessBuilder.java:453) >>> ... 16 more >>> >>> at >>> org.apache.hadoop.fs.RawLocalFileSystem$RawLocalFileStatus.loadPermissionInfo(RawLocalFileSystem.java:442) >>> at >>> org.apache.hadoop.fs.RawLocalFileSystem$RawLocalFileStatus.getOwner(RawLocalFileSystem.java:400) >>> at >>> org.apache.hadoop.mapred.TaskLog.obtainLogDirOwner(TaskLog.java:176) >>> at >>> org.apache.hadoop.mapred.TaskLogsTruncater.truncateLogs(TaskLogsTruncater.java:124) >>> at org.apache.hadoop.mapred.Child$4.run(Child.java:264) >>> at java.security.AccessController.doPrivileged(Native Method) >>> at javax.security.auth.Subject.doAs(Subject.java:396) >>> at >>> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1059) >>> at org.apache.hadoop.mapred.Child.main(Child.java:253) >>> >> > -- Lance Norskog [email protected]
