Shane Kumpf created YARN-6830:
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Summary: Support quoted strings for environment variables
Key: YARN-6830
URL: https://issues.apache.org/jira/browse/YARN-6830
Project: Hadoop YARN
Issue Type: Bug
Reporter: Shane Kumpf
There are cases where it is necessary to allow for quoted string literals
within environment variables values when passed via the yarn command line
interface.
For example, consider the follow environment variables for a MR map task.
{{MODE=bar}}
{{IMAGE_NAME=foo}}
{{MOUNTS=/tmp/foo,/tmp/bar}}
When running the MR job, these environment variables are supplied as a comma
delimited string.
{{-Dmapreduce.map.env="MODE=bar,IMAGE_NAME=foo,MOUNTS=/tmp/foo,/tmp/bar"}}
In this case, {{MOUNTS}} will be parsed and added to the task environment as
{{MOUNTS=/tmp/foo}}. Any attempts to quote the embedded comma separated value
results in quote characters becoming part of the value, and parsing still
breaks down at the comma.
This issue is to allow for quoting the comma separated value (escaped double or
single quote). This was mentioned on YARN-4595 and will impact YARN-5534 as
well.
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