[
https://issues.apache.org/jira/browse/HIVE-13029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15301574#comment-15301574
]
Lefty Leverenz commented on HIVE-13029:
---------------------------------------
Doc note: This adds *hive.llap.io.allocator.mmap* and
*hive.llap.io.allocator.mmap.path* to HiveConf.java, so they need to be
documented in the LLAP Cache section of Configuration Properties for release
2.1.0.
* [Configuration Properties -- LLAP Cache |
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-LLAPCache]
Added a TODOC2.1 label.
> NVDIMM support for LLAP Cache
> -----------------------------
>
> Key: HIVE-13029
> URL: https://issues.apache.org/jira/browse/HIVE-13029
> Project: Hive
> Issue Type: New Feature
> Components: llap
> Affects Versions: 2.1.0
> Reporter: Gopal V
> Assignee: Gopal V
> Priority: Critical
> Labels: TODOC2.1
> Fix For: 2.1.0
>
> Attachments: HIVE-13029.1.patch, HIVE-13029.2.patch,
> HIVE-13029.3.patch, HIVE-13029.4.patch
>
>
> LLAP cache has been designed so that the cache can be offloaded easily to a
> pmem API without restart coherence.
> The tricky part about NVDIMMs are restart coherence, while most of the cache
> gains can be obtained without keeping state across refreshes, since LLAP is
> not the system of record, HDFS is.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
