[jira] Commented: (HADOOP-4117) Improve configurability of Hadoop EC2 instances

["Chris K Wensel (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-4117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12631641#action_12631641 ] 

Chris K Wensel commented on HADOOP-4117:
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 ec2-run-user-data is not made executable, and isn't getting run on startup.

[root@ip-10-251-203-243 init.d]# ls -la ec2-run-user-data 
-rw-r--r-- 1 root root 1763 Sep 16 23:17 ec2-run-user-data

> Improve configurability of Hadoop EC2 instances
> -----------------------------------------------
>
>                 Key: HADOOP-4117
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4117
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/ec2
>            Reporter: Tom White
>            Assignee: Tom White
>             Fix For: 0.19.0
>
>         Attachments: hadoop-4117.patch
>
>
> Currently hadoop-site.xml for EC2 instances is stored as a part of the image and only a few properties can be controlled from the user scripts (compression, number of map/reduce tasks). Furthermore, it is not possible to rsync the configuration around the EC2 cluster with the current image, so the only way to customize the hadoop-site.xml file is to rebuild the image, which is time-consuming.
> It would be much better to pass the initialization script for nodes at boot time, so that it is easy to edit the configuration before starting a cluster.

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