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https://issues.apache.org/jira/browse/FLINK-6989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16066385#comment-16066385
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ASF GitHub Bot commented on FLINK-6989:
---------------------------------------
Github user greghogan commented on a diff in the pull request:
https://github.com/apache/flink/pull/4179#discussion_r124521762
--- Diff:
flink-libraries/flink-gelly-examples/src/main/java/org/apache/flink/graph/drivers/parameter/Parameter.java
---
@@ -40,6 +40,15 @@
String getUsage();
/**
+ * A hidden parameter is parsed from the command-line configuration but
is
+ * not printed in the usage string. This can be used for power-user
options
+ * not displayed to the general user.
--- End diff --
The initial use case was for disabling object reuse which a user should not
be concerned with (all the algorithms support object reuse) or even know about
but is used by the integration tests to validate the algorithms under object
reuse and for comparison benchmarking.
Another example is the next PR which hides the "algorithm" parallelism
which is only needed for large executions and might be confusing with the `-p`
"job" parallelism.
> Refactor examples with Output interface
> ---------------------------------------
>
> Key: FLINK-6989
> URL: https://issues.apache.org/jira/browse/FLINK-6989
> Project: Flink
> Issue Type: Sub-task
> Components: Gelly
> Affects Versions: 1.4.0
> Reporter: Greg Hogan
> Assignee: Greg Hogan
> Fix For: 1.4.0
>
>
> The current organization of the Gelly examples retains full flexibility by
> handling the Graph input to the algorithm Driver and having the Driver
> overload interfaces for the various output types. The outputs must be made
> independent in order to support Transforms which are applied between the
> Driver and Output (and also between the Input and Driver).
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