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https://issues.apache.org/jira/browse/YARN-2159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Ray Chiang updated YARN-2159:
-----------------------------

    Description: 
This bit of code:

{quote}
    LOG.info("Assigned container " + container.getId() + " of capacity "
        + container.getResource() + " on host " + rmNode.getNodeAddress()
        + ", which currently has " + numContainers + " containers, "
        + getUsedResource() + " used and " + getAvailableResource()
        + " available");
{quote}

results in a line like:

{quote}
2014-05-30 16:17:43,573 INFO 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSSchedulerNode: 
Assigned container container_1400666605555_0009_01_001111 of capacity 
<memory:1536, vCores:1> on host machine.host.domain.com:8041, which currently 
has 18 containers, <memory:27648, vCores:18> used and <memory:3072, vCores:0> 
available
{quote}

That message is fine in most cases, but looks pretty bad after the last 
available allocation, since it says something like "vCores:0 available".

Perhaps one of the following phrasings is better?

  - "which has 18 containers, <memory:27648, vCores:18> used and <memory:3072, 
vCores:0> available after allocation"

  was:
This bit of code:

    LOG.info("Assigned container " + container.getId() + " of capacity "
        + container.getResource() + " on host " + rmNode.getNodeAddress()
        + ", which currently has " + numContainers + " containers, "
        + getUsedResource() + " used and " + getAvailableResource()
        + " available");

results in a line like:

2014-05-30 16:17:43,573 INFO 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSSchedulerNode: 
Assigned container container_1400666605555_0009_01_001111 of capacity 
<memory:1536, vCores:1> on host machine.host.domain.com:8041, which currently 
has 18 containers, <memory:27648, vCores:18> used and <memory:3072, vCores:0> 
available

That message is fine in most cases, but looks pretty bad after the last 
available allocation, since it says something like "vCores:0 available".

Perhaps one of the following phrasings is better?

  - "which has 18 containers, <memory:27648, vCores:18> used and <memory:3072, 
vCores:0> available after allocation"


> allocateContainer() in SchedulerNode needs a clearer LOG.info message
> ---------------------------------------------------------------------
>
>                 Key: YARN-2159
>                 URL: https://issues.apache.org/jira/browse/YARN-2159
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager
>            Reporter: Ray Chiang
>            Assignee: Ray Chiang
>            Priority: Minor
>              Labels: supportability
>
> This bit of code:
> {quote}
>     LOG.info("Assigned container " + container.getId() + " of capacity "
>         + container.getResource() + " on host " + rmNode.getNodeAddress()
>         + ", which currently has " + numContainers + " containers, "
>         + getUsedResource() + " used and " + getAvailableResource()
>         + " available");
> {quote}
> results in a line like:
> {quote}
> 2014-05-30 16:17:43,573 INFO 
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSSchedulerNode: 
> Assigned container container_1400666605555_0009_01_001111 of capacity 
> <memory:1536, vCores:1> on host machine.host.domain.com:8041, which currently 
> has 18 containers, <memory:27648, vCores:18> used and <memory:3072, vCores:0> 
> available
> {quote}
> That message is fine in most cases, but looks pretty bad after the last 
> available allocation, since it says something like "vCores:0 available".
> Perhaps one of the following phrasings is better?
>   - "which has 18 containers, <memory:27648, vCores:18> used and 
> <memory:3072, vCores:0> available after allocation"



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