Appendix B: Settings

When running Drill outside of YARN, you can set many start-up options in Most users accept the defaults. However, some users require specialized settings.

Under YARN, Drill still reads your $DRILL_SITE/ file to pick up configuration. However, for most options, Drill-on-YARN provides configuration options in drill-on-yarn.conf to set options that were formerly set in

The following table provides a mapping:

*If you set these options in both places, the value in takes precedence. Note that EXTN_CLASSPATH (and drill.yarn.drillbit.extn-class-path) are a newer, more general way to add extensions. Rather than setting specific Hadoop or HBase variables, you can combine any number of extensions into the single extension classpath.