Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/18566#discussion_r126275245
--- Diff: docs/configuration.md ---
@@ -529,6 +529,15 @@ Apart from these, the following properties are also
available, and may be useful
</td>
</tr>
<tr>
+ <td><code>spark.reducer.maxReqSizeShuffleToMem</code></td>
+ <td>200m</td>
+ <td>
+ The blocks of a shuffle request will be fetched to disk when size of
the request is above
+ this threshold. This is to avoid a giant request takes too much
memory. Note that it's
+ necessary to have the support of shuffle service(at least Spark-2.2)
when enable this config.
--- End diff --
let's also mention how to enable this config, e.g. set it to `200m`
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
