Github user greghogan commented on a diff in the pull request:
https://github.com/apache/flink/pull/1778#discussion_r58394697
--- Diff:
flink-core/src/main/java/org/apache/flink/api/common/ExecutionConfig.java ---
@@ -64,10 +64,15 @@
/**
* The constant to use for the parallelism, if the system should use
the number
- * of currently available slots.
+ * of currently available slots.
*/
public static final int PARALLELISM_AUTO_MAX = Integer.MAX_VALUE;
+ /**
+ * The flag value indicating an unknown or unset parallelism.
+ */
+ public static final int PARALLELISM_UNKNOWN = -1;
--- End diff --
The parallelism may be overridden elsewhere and we are not resetting it
back to the default. This flag simply indicates a value for which the
parallelism will not be overridden.
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