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From "Sid Wagle" <swa...@hortonworks.com>
Subject Re: Review Request 18211: Actual configs not updated after restart of host component
Date Thu, 20 Feb 2014 18:38:57 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/18211/#review35033
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Ship it!


Ship It!

- Sid Wagle


On Feb. 19, 2014, 6:14 p.m., Dmytro Sen wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/18211/
> -----------------------------------------------------------
> 
> (Updated Feb. 19, 2014, 6:14 p.m.)
> 
> 
> Review request for Ambari, Nate Cole and Sid Wagle.
> 
> 
> Bugs: AMBARI-4708
>     https://issues.apache.org/jira/browse/AMBARI-4708
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> Updated HDFS configs aren't applied after RESTART.
> 
> Steps:
> 
> - On a 3 node cluster, create a ConfigGroup for datanode.
> - Override heap size to 1025m instead of 1024m
> - Restart DN.
> 
> Result:
> - The /var/lib/ambari-agent/data/config.json, has the correct values for the config type:
> {code}
> "global": {"2": "version1392171779044", "tag": "version1"}
> {code}
> - The API call still shows global as default version:
> {code}
> http://hostname1:8080/api/v1/clusters/c1/hosts/hostname1/host_components/DATANODE
> {code} 
> 
> Note:
> It works after agent is restarted.
> 
> {code}
> {
> global: {
> overrides: {
> 2: "version1392171779044"
> },
> default: "version1"
> }
> {code}
> 
> The cause is that hooks aren't executed for the custom_command like RESTART. Since configs
for HDFS are generated in hook.py, we must execute hook.py before custom commands or move
config generation from hook.py.
> 
> 
> Diffs
> -----
> 
>   ambari-agent/src/main/python/resource_management/libraries/script/hook.py c5cae63 
>   ambari-server/src/main/java/org/apache/ambari/server/controller/AmbariCustomCommandExecutionHelper.java
7f2d1fb 
>   ambari-server/src/main/java/org/apache/ambari/server/controller/AmbariManagementController.java
a6e52b0 
>   ambari-server/src/main/java/org/apache/ambari/server/controller/AmbariManagementControllerImpl.java
d607eb4 
>   ambari-server/src/main/resources/stacks/HDP/1.3.2/hooks/before-RESTART/scripts/hook.py
PRE-CREATION 
>   ambari-server/src/main/resources/stacks/HDP/1.3.2/hooks/before-START/scripts/params.py
0b62c87 
>   ambari-server/src/main/resources/stacks/HDP/2.0.6/hooks/before-RESTART/scripts/hook.py
PRE-CREATION 
>   ambari-server/src/main/resources/stacks/HDP/2.0.6/hooks/before-START/scripts/params.py
3239c7a 
> 
> Diff: https://reviews.apache.org/r/18211/diff/
> 
> 
> Testing
> -------
> 
> 1 Unit test failed, as it was before applying the patch.
> 
> Tests in error: 
>   testDeleteUsers(org.apache.ambari.server.controller.AmbariManagementControllerTest):
Could not remove user user1. System should have at least one user with administrator role.
> 
> Tests run: 1401, Failures: 0, Errors: 1, Skipped: 7
> 
> 
> Thanks,
> 
> Dmytro Sen
> 
>


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