Li Bo created HDFS-7678:
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Summary: Block group reader with decode functionality
Key: HDFS-7678
URL: https://issues.apache.org/jira/browse/HDFS-7678
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Li Bo
Assignee: Li Bo
A block group reader will read data from BlockGroup no matter in striping
layout or contiguous layout. The corrupt blocks can be known before
reading(told by namenode), or just be found during reading. The block group
reader needs to do decoding work when some blocks are found corrupt.
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