Jason Lowe created YARN-7226:
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Summary: Whitelisted variables do not support delayed variable
expansion
Key: YARN-7226
URL: https://issues.apache.org/jira/browse/YARN-7226
Project: Hadoop YARN
Issue Type: Bug
Components: nodemanager
Affects Versions: 3.0.0-alpha4, 2.8.1, 2.9.0
Reporter: Jason Lowe
Assignee: Jason Lowe
The nodemanager supports a configurable list of environment variables, via
yarn.nodemanager.env-whitelist, that will be propagated to the container's
environment unless those variables were specified in the container launch
context. Unfortunately the handling of these whitelisted variables prevents
using delayed variable expansion. For example, if a user shipped their own
version of hadoop with their job via the distributed cache and specified:
{noformat}
HADOOP_COMMON_HOME={{PWD}}/my-private-hadoop/
{noformat}
as part of their job, the variable will be set as the *literal* string:
{noformat}
$PWD/my-private-hadoop/
{noformat}
rather than having $PWD expand to the container's current directory as it does
for any other, non-whitelisted variable being set to the same value.
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