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Ship it!




Ship It!

- Sandor Magyari


On April 21, 2016, 3:19 p.m., Sebastian Toader wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/46496/
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> (Updated April 21, 2016, 3:19 p.m.)
> 
> 
> Review request for Ambari, Daniel Gergely, Laszlo Puskas, Sandor Magyari, 
> Sumit Mohanty, and Sid Wagle.
> 
> 
> Bugs: AMBARI-16013
>     https://issues.apache.org/jira/browse/AMBARI-16013
> 
> 
> Repository: ambari
> 
> 
> Description
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> 
> When hosts register to Ambari server the `TopologyManager` adds these to its 
> `availableHosts` collection. When a cluster is provisioned using Blueprints 
> `TopologyManager` tries to allocate required hosts to hostgroups from the 
> available hosts collection. In case hosts turned into HEARTBEAT_LOST state 
> these were not removed from `availableHosts` this resulting scheduling 
> logical tasks to unreachable hosts. When these unreachable hosts become 
> available re-register with Ambari server. The server since already scheduled 
> logical tasks for these it won't try again thus will never create role 
> commands to be executed by the hosts.
> 
> `TopologyManager` has been hooked now to the HEARTBEAT_LOST state transition 
> to remove the host in question from its internal `availableHosts` collection.
> 
> 
> Diffs
> -----
> 
>   
> ambari-server/src/main/java/org/apache/ambari/server/state/host/HostImpl.java 
> d221112 
>   
> ambari-server/src/main/java/org/apache/ambari/server/topology/TopologyManager.java
>  5a0aca0 
> 
> Diff: https://reviews.apache.org/r/46496/diff/
> 
> 
> Testing
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> 
> Manual testign with a 5 node cluster using Blueprints.
> 
> Unit tests:
> Results :
> 
> Tests run: 3561, Failures: 0, Errors: 0, Skipped: 36
> 
> 
> Thanks,
> 
> Sebastian Toader
> 
>

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