Kai Zheng created HADOOP-12040:
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Summary: Adjust inputs order for the decode API in raw erasure
coder
Key: HADOOP-12040
URL: https://issues.apache.org/jira/browse/HADOOP-12040
Project: Hadoop Common
Issue Type: Sub-task
Reporter: Kai Zheng
Assignee: Kai Zheng
Currently we used the parity units + data units order for the inputs,
erasedIndexes and outputs parameters in the decode call in raw erasure coder,
which inherited from HDFS-RAID due to impact enforced by {{GaliosField}}. As
[~zhz] pointed and [~hitliuyi] felt, we'd better change the order to make it
natural for HDFS usage, where usually data blocks are before parity blocks in a
group. Doing this would avoid some reordering tricky logic.
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