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Posted to hdfs-user@hadoop.apache.org by Mohit Anchlia <mo...@gmail.com> on 2014/06/13 19:39:13 UTC
Heartbeat info in AM and NM in Yarn
It appears that NM and AM both sends the heartbeat to the resource manager.
It also appears that they send the health information of the containers
running on the node. I am trying to understand what's the core difference
between the two?
Re: Heartbeat info in AM and NM in Yarn
Posted by Jian He <jh...@hortonworks.com>.
NM heartbeats with RM to update container status while AM is periodically
heartbeats with RM to tell RM that AM itself is still alive. AM also use
the same heartbeat call to negotiate resources from RM
Jian
On Fri, Jun 13, 2014 at 10:39 AM, Mohit Anchlia <mo...@gmail.com>
wrote:
> It appears that NM and AM both sends the heartbeat to the resource
> manager. It also appears that they send the health information of the
> containers running on the node. I am trying to understand what's the core
> difference between the two?
--
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Re: Heartbeat info in AM and NM in Yarn
Posted by Jian He <jh...@hortonworks.com>.
NM heartbeats with RM to update container status while AM is periodically
heartbeats with RM to tell RM that AM itself is still alive. AM also use
the same heartbeat call to negotiate resources from RM
Jian
On Fri, Jun 13, 2014 at 10:39 AM, Mohit Anchlia <mo...@gmail.com>
wrote:
> It appears that NM and AM both sends the heartbeat to the resource
> manager. It also appears that they send the health information of the
> containers running on the node. I am trying to understand what's the core
> difference between the two?
--
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to
which it is addressed and may contain information that is confidential,
privileged and exempt from disclosure under applicable law. If the reader
of this message is not the intended recipient, you are hereby notified that
any printing, copying, dissemination, distribution, disclosure or
forwarding of this communication is strictly prohibited. If you have
received this communication in error, please contact the sender immediately
and delete it from your system. Thank You.
Re: Heartbeat info in AM and NM in Yarn
Posted by Jian He <jh...@hortonworks.com>.
NM heartbeats with RM to update container status while AM is periodically
heartbeats with RM to tell RM that AM itself is still alive. AM also use
the same heartbeat call to negotiate resources from RM
Jian
On Fri, Jun 13, 2014 at 10:39 AM, Mohit Anchlia <mo...@gmail.com>
wrote:
> It appears that NM and AM both sends the heartbeat to the resource
> manager. It also appears that they send the health information of the
> containers running on the node. I am trying to understand what's the core
> difference between the two?
--
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to
which it is addressed and may contain information that is confidential,
privileged and exempt from disclosure under applicable law. If the reader
of this message is not the intended recipient, you are hereby notified that
any printing, copying, dissemination, distribution, disclosure or
forwarding of this communication is strictly prohibited. If you have
received this communication in error, please contact the sender immediately
and delete it from your system. Thank You.
Re: Heartbeat info in AM and NM in Yarn
Posted by Jian He <jh...@hortonworks.com>.
NM heartbeats with RM to update container status while AM is periodically
heartbeats with RM to tell RM that AM itself is still alive. AM also use
the same heartbeat call to negotiate resources from RM
Jian
On Fri, Jun 13, 2014 at 10:39 AM, Mohit Anchlia <mo...@gmail.com>
wrote:
> It appears that NM and AM both sends the heartbeat to the resource
> manager. It also appears that they send the health information of the
> containers running on the node. I am trying to understand what's the core
> difference between the two?
--
CONFIDENTIALITY NOTICE
NOTICE: This message is intended for the use of the individual or entity to
which it is addressed and may contain information that is confidential,
privileged and exempt from disclosure under applicable law. If the reader
of this message is not the intended recipient, you are hereby notified that
any printing, copying, dissemination, distribution, disclosure or
forwarding of this communication is strictly prohibited. If you have
received this communication in error, please contact the sender immediately
and delete it from your system. Thank You.