Github user zellerh commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/995#discussion_r104718639
--- Diff: docs/cqd_reference/src/asciidoc/_chapters/query_execution.adoc ---
@@ -237,3 +237,27 @@ If you enable small scanner on large size scan
incorrectly, then you are likely
| *Deprecated In Release* | Not applicable.
|===
+<<<
+[[scratch-disks]]
+== SCRATCH_DISKS
+
+[cols="25%h,75%"]
+|===
+| *Description* | Allows a CQD specification to override
the env settings for STFS locations.
+| *Values* | Scratch disk locations for overflow (linux
path names).
+| *Usage* | Currently the scratch directory locations
are set at installation time. The STFS layer that manages the scratch file
creation reads the envvar in ms.env to determine where to create the scratch
files.
+
+The CQD is allowed to be specified that will override the envvar setting.
This will give the user some flexibility to change scratch directory locations.
--- End diff --
I assume the environment variable is set in $TRAF_HOME/etc/ms.env?
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