Yan created HDFS-14147:
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Summary: Backport of HDFS-13056 to the 2.9 branch
Key: HDFS-14147
URL: https://issues.apache.org/jira/browse/HDFS-14147
Project: Hadoop HDFS
Issue Type: New Feature
Components: datanode, distcp, hdfs
Affects Versions: 2.9.2, 2.9.1, 2.9.0
Reporter: Yan
HDFS-13056, Expose file-level composite CRCs in HDFS which are comparable
across different instances/layouts, is a significant feature for storage
agnostic CRC comparisons between HDFS and cloud object stores such as S3 and
GCS. With the extensively installed base of Hadoop 2, it should make a lot of
sense to have the feature in Hadoop 2.
The plan is to start with the backporting to 2.9, followed by 2.8 and 2.7 in
that order.
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