Kai Zheng created HDFS-8139:
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Summary: Refine or extend EC command to support all cases
Key: HDFS-8139
URL: https://issues.apache.org/jira/browse/HDFS-8139
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Kai Zheng
Assignee: Vinayakumar B
Currently a {{CODEC}} command is used to distribute stripping recovery command
to DataNode. Discussed with [~umamaheswararao] and [~vinayrpet] further, we may
need to refine or extend the command to support all cases, as we may distribute
encoding and recovering tasks in both stripping and non-stripping cases. We may
have two ways: 1) a single command but uses a flag in it to denote all the
cases; 2) more commands.
This will also consider how to layout, optimize or document relevant info
contained in the the corresponding command related to the block group, so
DataNode will be able to restore such info according to the concrete command.
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