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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "Hive/StorageHandlers" by JohnSichi
Date Wed, 10 Mar 2010 01:04:03 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.

The "Hive/StorageHandlers" page has been changed by JohnSichi.
http://wiki.apache.org/hadoop/Hive/StorageHandlers?action=diff&rev1=2&rev2=3

--------------------------------------------------

  
  = Open Issues =
  
-  * The storage handler class name is currently saved to the metastore via table property
{{{storage_handler}}}; this should probably be a first-class attribute on MTable instead
+  * The storage handler class name is currently saved to the metastore via table property
{{{storage_handler}}}; this should probably be a first-class attribute on MStorageDescriptor
instead
   * Names of helper classes such as input format and output format are saved into the metastore
based on what the storage handler returns during CREATE TABLE; it would be better to leave
these null in case they are changed later as part of a handler upgrade
   * A dummy location is currently set for a non-native table (the same as if it were a native
table), even though no Hive files are created for it.  We would prefer to store null, but
first we need to fix the way data source information is passed to input formats (HIVE-1133)
   * Storage handlers are currently set only at the table level.  We may want to allow them
to be specified per partition, including support for a table spanning different storage handlers.

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