Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/672#discussion_r90267374
--- Diff: exec/java-exec/src/main/resources/drill-module.conf ---
@@ -207,11 +207,12 @@ drill.exec: {
// Set this property if custom absolute root should be used for
remote directories, ex: root: "/app/drill".
// root: "",
- // Relative base directory for all udf directories (local and
remote).
+ // Base directory for all udf directories (local and remote).
base: ${drill.exec.zk.root}"/udf",
- // Relative path to local udf directory.
- // Generated temporary directory is used as root unless
${DRILL_TMP_DIR} or ${drill.tmp-dir} is set.
+ // Relative local udf directory. Drill temporary directory is used
as root for this directory.
+ // Drill temporary directory is set to generated temporary directory
+ // unless ${DRILL_TMP_DIR} or ${drill.tmp-dir} is set.
--- End diff --
Still not sure this entirely makes sense. This is a local file system
directory. We describe ow the default is based on DRILL_TMP_DIR, etc. That all
make sense.
But the actual default value is based on the base directory in the file
system configured by fs, which might be HDFS.
And, since we specify a value here, the `drill.tmp.dir` will never be used.
Do we really mean:
```
local: "${drill-tmp-dir}/udfs"
```
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