The new features of ORC 1.2:

• ORC-54 Evolve schemas based on field name rather than index
• ORC-84 Create a separate java tool module.
• ORC-77 and ORC-81 Implement LZO and LZ4 compression codecs.
• ORC-92 Add support for nested column id selection in C++
• ORC-69 Add batch option support in orc-scan tools.

Important fixes:

• HIVE-14214 ORC schema evolution and predicate push down do not work together.