Lei (Eddy) Xu created HDFS-12923:
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Summary: DFS.concat should throw exception if files have different
EC policies.
Key: HDFS-12923
URL: https://issues.apache.org/jira/browse/HDFS-12923
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 3.0.0
Reporter: Lei (Eddy) Xu
Priority: Critical
{{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.
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