[HIVE-25521] Data corruption when concatenating files with different compressions in same table/partition

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-alpha-1
• Labels: pull-request-available
• Target Version/s: 4.0.0
• Assignee: Harish JP
• Reporter: Harish JP
• Created: 14/Sep/21 22:29
• Updated: 17/Nov/22 08:48
• Resolved: 08/Oct/21 20:23

Description

Currently if files of different compressions are in same directory then concatenate can fail and cause data corruption. This happens because file can be moved by one task as incompatible file and the other tasks will fail after this.

 

This issue is addressed in this Jira by only processing a file in one task where offset 0 is process and ignoring the the file in all other tasks.

Issue Links

• links to: Github PR
• links to: GitHub Pull Request #2639