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https://issues.apache.org/jira/browse/TEZ-3326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15450466#comment-15450466
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Hitesh Shah commented on TEZ-3326:
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bq. It appears that the motivation for returning a string as opposed to
directly logging is to avoid logging a line with no message.
I guess the function itself could have done the null check but we can keep the
code as is for now.
bq. Is there a way I can do that with conf.getStrings()?
Not in a one-liner but how about using conf.getTrimmedStringCollection() and if
empty, falling back to a default where the default is a collection of strings
which does not require additional parsing?
> Display JVM system properties in AM and task logs
> -------------------------------------------------
>
> Key: TEZ-3326
> URL: https://issues.apache.org/jira/browse/TEZ-3326
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Ming Ma
> Assignee: Eric Badger
> Attachments: TEZ-3326.001.patch, TEZ-3326.002.patch,
> TEZ-3326.003.patch
>
>
> MapReduce displays JVM system properties via config
> {{mapreduce.jvm.system-properties-to-log}} in both AM and task log . This is
> useful to debug env setting such as java version, etc. It is useful to have
> such logging in Tez.
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