[HDFS-12923] DFS.concat should throw exception if files have different EC policies.

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Won't Fix
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: erasure-coding
• Target Version/s: 3.1.0, 3.0.1
• Assignee: Unassigned
• Reporter: Lei (Eddy) Xu
• Created: 13/Dec/17 08:43
• Updated: 14/Dec/17 03:33
• Resolved: 14/Dec/17 00:29

Description

DFS#concat appends blocks from different files to a single file. However, if these files have different EC policies, or mixed with replicated and EC files, the resulted file would be problematic to read, because the EC codec is defined in INode instead of in a block.

Issue Links

• duplicates: HDFS-8438 Erasure Coding: Allow concat striped files if they have the same ErasureCodingPolicy