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From "Alejandro Fernandez (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-19809) HDP 3.0 TP - failed to deploy YARN configs because yarn-site creates conflicts since should not belong to MAPREDUCE2
Date Wed, 01 Feb 2017 00:19:51 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-19809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alejandro Fernandez updated AMBARI-19809:
-----------------------------------------
    Attachment: AMBARI-19809.patch

> HDP 3.0 TP - failed to deploy YARN configs because yarn-site creates conflicts since
should not belong to MAPREDUCE2
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: AMBARI-19809
>                 URL: https://issues.apache.org/jira/browse/AMBARI-19809
>             Project: Ambari
>          Issue Type: Bug
>          Components: stacks
>    Affects Versions: 3.0.0
>            Reporter: Alejandro Fernandez
>            Assignee: Alejandro Fernandez
>             Fix For: 3.0.0
>
>         Attachments: AMBARI-19809.patch
>
>
> STR:
> * Install Ambari trunk
> * Install HDP 3.0, e.g., centos6: http://s3.amazonaws.com/dev.hortonworks.com/HDP/centos6/3.x/BUILDS/3.0.0.0-30
> * Select ZK, HDFS, YARN
> * During deployment, will see the following error in the ambari-server log
> {noformat}
> 26 Jan 2017 20:01:48,119 ERROR [ambari-client-thread-26] ClusterImpl:2662 - Updating
configs for multiple services by a single API request isn't supported. Conflicting services
YARN and MAPREDUCE2 for yarn-site, config version not created for YARN
> {noformat}
> This is likely due to changes I introduced in YARN's Service Advisor by splitting it
up into YARN and MAPREDUCE classes.
> ambari-server/src/main/resources/common-services/YARN/3.0.0.3.0/service_advisor.py
> has YARNServiceAdvisor, MAPREDUCE2ServiceAdvisor
> Ideally, we can keep those 2 classes, but let's also explore ClusterImpl.java's applyConfigs()
method.
> {code}
>   ServiceConfigVersionResponse applyConfigs(Set<Config> configs, String user, String
serviceConfigVersionNote) {
>     String serviceName = null;
>     for (Config config : configs) {
>       for (Entry<String, String> entry : serviceConfigTypes.entries()) {
>         if (StringUtils.equals(entry.getValue(), config.getType())) {
>           if (serviceName == null) {
>             serviceName = entry.getKey();
>             break;
>           } else if (!serviceName.equals(entry.getKey())) {
>             String error = String.format("Updating configs for multiple services by a
" +
>                 "single API request isn't supported. Conflicting services %s and %s for
%s",
>                                          serviceName, entry.getKey(), config.getType());
>             IllegalArgumentException exception = new IllegalArgumentException(error);
>             LOG.error(error + ", config version not created for {}", serviceName);
>             throw exception;
>           } else {
>             break;
>           }
>         }
>       }
>     }
>    ...
> {code}
> This is because yarn-site is marked right now as belonging to both YARN and MAPREDUCE2,
which is incorrect since it should not belong to MAPREDUCE2.
> The fix update the HDP 3.0 service definition for MAPREDUCE2 to use the correct configuration
directory.



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