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From paul-rogers <...@git.apache.org>
Subject [GitHub] drill pull request #666: DRILL-4956: Temporary tables support
Date Tue, 06 Dec 2016 06:12:26 GMT
Github user paul-rogers commented on a diff in the pull request:

    https://github.com/apache/drill/pull/666#discussion_r91011555
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserSession.java
---
    @@ -55,13 +61,37 @@
       private OptionManager sessionOptions;
       private final AtomicInteger queryCount;
     
    +  /** Unique session identifier used as suffix in temporary table names. */
    +  private final String uuid;
    +  /** Cache that stores all temporary tables by schema names. */
    +  private final TemporaryTablesCache temporaryTablesCache;
    +
    +  /** On session close drops all temporary tables from their schemas and clears temporary
tables cache. */
    --- End diff --
    
    To avoid cluttering this class, should the temp tables registry be an attribute of the
user session?
    ```
    userSession.tempTables( ).register( ... )
    ```
    instead of
    ```
    userSession.registerTempTable( ... )
    ```
    then, close here would simply call close on the temp table registry.


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