Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/21370#discussion_r194951918
--- Diff: docs/configuration.md ---
@@ -456,6 +456,33 @@ Apart from these, the following properties are also
available, and may be useful
from JVM to Python worker for every task.
</td>
</tr>
+<tr>
+ <td><code>spark.sql.repl.eagerEval.enabled</code></td>
+ <td>false</td>
+ <td>
+ Enable eager evaluation or not. If true and the REPL you are using
supports eager evaluation,
--- End diff --
I don't completely follow actually - what makes a "REPL does not support
eager evaluation"?
in fact, this "eager evaluation" is just object rendering support build
into REPL, notebook etc (like print), it's not really design to be "eager
evaluation"
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