public boolean getAccessLogEnabled(String storeName) {
    return getBoolean(String.format(ACCESSLOG_ENABLED, storeName), false);
  }
If the config specifies 'stores.&lt;storename&gt;.changelog' as '&lt;system&gt;.&lt;stream&gt;' combination - it will take
precedence.
If this config only specifies &lt;astream&gt; and there is a value in job.changelog.system=&lt;asystem&gt; - these values will
be combined into &lt;asystem&gt;.&lt;astream&gt;
samza-core/src/main/java/org/apache/samza/config/StorageConfig.java