No this is not a bug. This is the new behavior. Please see for details -
https://issues.apache.org/jira/browse/HDFS-1547
On Tue, Oct 29, 2013 at 1:48 AM, lei liu <liulei...@gmail.com> wrote:
> Should the datanode be shutdown when it is Decommissioned?
>
> I think if this is bug, I can fix it.
>
>
> 2013/10/29 lei liu <liulei...@gmail.com>
>
> > HI Steve, thanks for your reply.
> >
> >
> > There is the question in hadoop-2.2.0.
> >
> >
> > In hadoop-2.2.0, there are below code in DatanodeManager.handleHeartbeat
> > method :
> > // Check if this datanode should actually be shutdown instead.
> > if (nodeinfo != null &&* nodeinfo.isDisallowed()*) {
> > setDatanodeDead(nodeinfo);
> > throw new DisallowedDatanodeException(nodeinfo);
> > }
> >
> >
> > In hadoop-1.0.1, there are below code in FSNamesystem.handleHeartbeat
> > method:
> > // Check if this datanode should actually be shutdown instead.
> > if (nodeinfo != null && shouldNodeShutdown(nodeinfo)) {
> > setDatanodeDead(nodeinfo);
> > throw new DisallowedDatanodeException(nodeinfo);
> > }
> >
> > private boolean shouldNodeShutdown(DatanodeDescriptor node) {
> > return (node.isDecommissioned());
> > }
> >
> >
> > So in hadoop-1.0.1, when the datanode is Decommissioned, the datanode
> will
> > be kill by NameNode, but in hadoop-2.2.0, when the datanode is
> > Decommissioned, the datanode still is lived.
> >
> >
> >
> > 2013/10/28 Steve Loughran <ste...@hortonworks.com>
> >
> >> sounds like a question for the cloudera support forums
> >>
> >>
> >> On 28 October 2013 08:59, lei liu <liulei...@gmail.com> wrote:
> >>
> >> > In CDH3u5, when the DataNode is Decommissioned, the DataNode progress
> >> will
> >> > be shutdown by NameNode.
> >> >
> >> > But In CDH4.3.1, when the DataNode is Decommissioned, the DataNode
> >> progress
> >> > will be not shutdown by NameNode.
> >> >
> >> >
> >> > When the datanode is Decommissioned, why the datanode is not
> >> automatically
> >> > shutdown by NameNode in CDH4.3.1?
> >> >
> >> >
> >> > Thanks,
> >> >
> >> > LiuLei
> >> >
> >>
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