Hadoop, mail # user - How to take a datanode down temporarily

Re: How to take a datanode down temporarily

A BlueCoder 2011-08-28, 02:19

Hi, I tried to build Hadoop source from latest source (trunk), and run into
the following error:

[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2:exec
(generate-version) on pr
oject hadoop-yarn-common: Command execution failed. Cannot run program
"scripts\saveVersion.sh" (in
directory
"C:\temp\workspace\hadoop_trunk\hadoop-mapreduce-project\hadoop-yarn\hadoop-yarn-common"):
CreateProcess error=2, The system cannot find the file specified -> [Help
1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
goal org.codehaus.mojo:exe
c-maven-plugin:1.2:exec (generate-version) on project hadoop-yarn-common:
Command execution failed.
   at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
   at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
   at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
   at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBu
ilder.java:84)
   at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBu
ilder.java:59)
   at
org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter
.java:183)
   at
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
   at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
   at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
   at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)

Any ideas?

Thanks,

B.C. 008

On Sat, Aug 27, 2011 at 4:04 PM, Koert Kuipers <[EMAIL PROTECTED]> wrote:

> How do i take a machine down that is a datanode without causing the
> namenode
> to start fixing the under-replication? Say i need to fix something on the
> machine that will take 30 mins, and after that i plan to turn it back on.
>