Avro column type in Hive

[Sergey Shelukhin]

Hi. 
I noticed that when I create an Avro table using a very large schema file,
mysql metastore silently truncates the TYPE_NAME in COLUMNS_V2 table to
the size of varchar (4000); however, when I do describe on the table, it
still displays the whole type name (around 100Kb long) that I presume it
gets from deserializer.
Is the value in TYPE_NAME used for anything for Avro tables?