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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-13029) NVDIMM support for LLAP Cache
Date Tue, 09 Feb 2016 08:00:28 GMT

     [ https://issues.apache.org/jira/browse/HIVE-13029?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gopal V updated HIVE-13029:
---------------------------
    Description: 
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.

  was:
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.


> 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
>
> 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.



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