[HIVE-6656] Bug in ORC Timestamp reader returns wrong nanoseconds

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.13.0, 0.14.0
• Fix Version/s: 0.13.0
• Labels: orcfile
• Assignee: Prasanth Jayachandran
• Reporter: Prasanth Jayachandran
• Created: 13/Mar/14 19:54
• Updated: 18/Mar/14 00:59
• Resolved: 18/Mar/14 00:59

Description

ORC timestamp writer stores the number of trailing zeros in 3 LSB bits. There is a bug in parsing nanosecond logic that returns incorrect value.

Input:
1999-01-01 00:00:00.999999999

Output:
1999-01-01 00:00:00.463129087

The fix for this is parseNanos() should first right shift by 3 and then typecast to int.

Issue Links

• links to: Review Board