Documentation for HIVE-4963 (Support in memory PTF partitions) missing

[Lars Francke]

Hi,

it'd be great if someone could answer my question here
<https://issues.apache.org/jira/browse/HIVE-4963?focusedCommentId=13755946&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13755946>

Thank you!

Cheers,
Lars