[jira] [Updated] (HIVE-7313) Allow session-level temp-tables to be marked as in-memory tables

["Gopal V (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-7313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gopal V updated HIVE-7313:
--------------------------
    Affects Version/s: 0.14.0

> Allow session-level temp-tables to be marked as in-memory tables
> ----------------------------------------------------------------
>
>                 Key: HIVE-7313
>                 URL: https://issues.apache.org/jira/browse/HIVE-7313
>             Project: Hive
>          Issue Type: Improvement
>          Components: Tez
>    Affects Versions: 0.14.0
>            Reporter: Gopal V
>              Labels: InMemory, Performance
>
> When the hadoop-2.3C shims are in action, APIs which can pin small tables into memory are available.
> Any session with an in-memory table can create HDFS in-memory pools with default caching semantics and add its files into the cache pool.
> Example code to implement the behaviour was prototyped for the Tez Application Master, but the AM does not have enough information to determine the cache policies.
> https://github.com/rajeshbalamohan/hdfs-cache-tool/blob/master/src/main/java/org/apache/hadoop/hdfs/tools/HDFSCache.java#L74



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