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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "Avro/Glossary" by JeffHammerbacher
Date Fri, 23 Oct 2009 05:32:00 GMT
Dear Wiki user,

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

The "Avro/Glossary" page has been changed by JeffHammerbacher.
http://wiki.apache.org/hadoop/Avro/Glossary?action=diff&rev1=4&rev2=5

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

  === IO ===
-  * '''Decoder'''
-  * '''Encoder'''
+  * '''Encoder'''/'''Decoder''': Avro specifies two different encodings: Binary and JSON.
See http://hadoop.apache.org/avro/docs/current/spec.html#Encodings for the details of these
encodings.
+  * '''block''': Array and Maps are encoded as a series of blocks, with a "count" long at
the beginning of each block (and optionally "size"). Used for reading and writing data structures
that don't fit into memory (maybe; not implemented yet). May also refer to the "blocks" in
a file object container.
   * '''!DatumReader'''/'''!DatumWriter'''
   * '''!DataFileReader'''/'''!DataFileWriter'''
  

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