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https://issues.apache.org/jira/browse/HDDS-1596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16918352#comment-16918352
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Hudson commented on HDDS-1596:
------------------------------
FAILURE: Integrated in Jenkins build Hadoop-trunk-Commit #17196 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17196/])
Revert "HDDS-1596. Create service endpoint to download configuration (elek: rev
371c9eb6a69de8f45008ff6f4033a5fa78ccf2f6)
* (edit)
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OzoneManagerStarter.java
* (edit) hadoop-hdds/pom.xml
* (edit)
hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/server/BaseHttpServer.java
* (edit)
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/conf/OzoneConfiguration.java
* (edit)
hadoop-hdds/framework/src/test/java/org/apache/hadoop/hdds/server/TestServerUtils.java
* (delete)
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/discovery/DiscoveryApplication.java
* (edit)
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/HddsDatanodeService.java
* (delete)
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/discovery/ConfigurationXml.java
* (edit)
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/server/StorageContainerManagerHttpServer.java
* (edit)
hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/Gateway.java
* (edit) hadoop-ozone/dist/src/main/compose/ozone/docker-compose.yaml
* (delete)
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/discovery/DiscoveryUtil.java
* (delete)
hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/discovery/package-info.java
* (delete)
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/discovery/package-info.java
* (edit)
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/server/StorageContainerManagerStarter.java
* (edit) hadoop-hdds/server-scm/pom.xml
* (delete)
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/discovery/ConfigurationXmlEntry.java
* (edit)
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/server/SCMBlockProtocolServer.java
* (edit) hadoop-ozone/dist/src/main/compose/ozone/docker-config
* (edit)
hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/server/ServerUtils.java
* (delete)
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/discovery/ConfigurationEndpoint.java
* (edit) hadoop-ozone/ozonefs/pom.xml
> Create service endpoint to download configuration from SCM
> ----------------------------------------------------------
>
> Key: HDDS-1596
> URL: https://issues.apache.org/jira/browse/HDDS-1596
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Elek, Marton
> Assignee: Elek, Marton
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.5.0
>
> Time Spent: 4h 10m
> Remaining Estimate: 0h
>
> As written in the design doc (see the parent issue) it was proposed to
> download the configuration from the scm by the other services.
> I propose to create a separated endpoint to provide the ozone configuration.
> /conf can't be used as it contains *all* the configuration and we need only
> the modified configuration.
> The easiest way to implement this feature is:
> * Create a simple rest endpoint which publishes all the configuration
> * Download the configurations to $HADOOP_CONF_DIR/ozone-global.xml during
> the service startup.
> * Add ozone-global.xml as an additional config source (before ozone-site.xml
> but after ozone-default.xml)
> * The download can be optional
> With this approach we keep the support of the existing manual configuration
> (ozone-site.xml has higher priority) but we can download the configuration to
> a separated file during the startup, which will be loaded.
> There is no magic: the configuration file is saved and it's easy to debug
> what's going on as the OzoneConfiguration is loaded from the $HADOOP_CONF_DIR
> as before.
> Possible follow-up steps:
> * Migrate all the other services (recon, s3g) to the new approach. (possible
> newbie jiras)
> * Improve the CLI to define the SCM address. (As of now we use
> ozone.scm.names)
> * Create a service/hostname registration mechanism and autofill some of the
> configuration based on the topology information.
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