Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/6284#discussion_r202086059
--- Diff:
flink-core/src/main/java/org/apache/flink/configuration/CoreOptions.java ---
@@ -181,12 +181,17 @@
* The config parameter defining the directories for temporary files,
separated by
* ",", "|", or the system's {@link java.io.File#pathSeparator}.
*/
- @Documentation.OverrideDefault("System.getProperty(\"java.io.tmpdir\")")
+ @Documentation.OverrideDefault("'LOCAL_DIRS' on Yarn and
'_FLINK_TMP_DIR' on Mesos.")
public static final ConfigOption<String> TMP_DIRS =
key("io.tmp.dirs")
.defaultValue(System.getProperty("java.io.tmpdir"))
.withDeprecatedKeys("taskmanager.tmp.dirs");
+ /**
+ * String key, which says if variable `java.io.tmpdir` has been
overridden for the cluster.
+ */
+ public static final String TMP_DIRS_OVERRIDDEN =
"io.tmp.dirs.overridden";
--- End diff --
Let's make this a proper `ConfigOption<Boolean>` with name
`USE_LOCAL_DEFAULT_TMP_DIRS` key name `internal.io.tmp.dirs.use-local-default`
---
