[
https://issues.apache.org/jira/browse/HIVE-17545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16180111#comment-16180111
]
Rui Li commented on HIVE-17545:
-------------------------------
Hi [~stakiar], since we have a switch to turn off combing equivalent works, why
do we need another config to turn off RDD caching? More importantly, if user
turns on combining equivalent works and turns off RDD caching, then there won't
be perf improvement right?
> Make HoS RDD Cacheing Optimization Configurable
> -----------------------------------------------
>
> Key: HIVE-17545
> URL: https://issues.apache.org/jira/browse/HIVE-17545
> Project: Hive
> Issue Type: Improvement
> Components: Physical Optimizer, Spark
> Reporter: Sahil Takiar
> Assignee: Sahil Takiar
> Attachments: HIVE-17545.1.patch, HIVE-17545.2.patch
>
>
> The RDD cacheing optimization add in HIVE-10550 is enabled by default. We
> should make it configurable in case users want to disable it. We can leave it
> on by default to preserve backwards compatibility.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
