Can spark-defaults.conf resolve environment variables?
<p>If I have a line like below in my <code>spark-env.sh</code> file</p>

<pre><code>export MY_JARS==$(jars=(/my/lib/dir/*.jar); IFS=,; echo "${jars[*]}")
</code></pre>

<p>which gives me a comma delimited list of jars in <code>/my/lib/dir</code>, is there a way I can specify</p>

<pre><code>spark.jars $MY_JARS
</code></pre>

<p>in the <code>spark-defaults.conf</code>?</p>