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From "Elek, Marton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15656) Support byteman in hadoop-runner baseimage
Date Thu, 09 Aug 2018 07:28:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16574399#comment-16574399

Elek, Marton commented on HADOOP-15656:

I uploaded two screenshot about the example usage (printing out hadoop rpc traffic) to HDDS-342

> Support byteman in hadoop-runner baseimage
> ------------------------------------------
>                 Key: HADOOP-15656
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15656
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Elek, Marton
>            Assignee: Elek, Marton
>            Priority: Major
>         Attachments: HADOOP-15656-docker-hadoop-runner.001.patch
> [Byteman|http://byteman.jboss.org/] is an easy to use tool to instrument a java process
with agent string.
> For example [this script|https://gist.githubusercontent.com/elek/0589a91b4d55afb228279f6c4f04a525/raw/8bb4e03de7397c8a9d9bb74a5ec80028b42575c4/hadoop.btm]
defines a rule to print out all the hadoop rpc traffic to the standard output (which is extremely
useful for testing development).
> This patch adds the byteman.jar to the baseimage and defines a simple logic to add agent
instrumentation string to the HADOOP_OPTS (optional it also could download the byteman script
from an url)

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