[jira] [Created] (HDFS-11918) Ozone: Encapsulate KSM metadata key into protobuf messages for better (de)serialization

["Weiwei Yang (JIRA)" <ji...@apache.org>]

Weiwei Yang created HDFS-11918:
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             Summary: Ozone: Encapsulate KSM metadata key into protobuf messages for better (de)serialization
                 Key: HDFS-11918
                 URL: https://issues.apache.org/jira/browse/HDFS-11918
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: ozone
            Reporter: Weiwei Yang
            Assignee: Weiwei Yang
            Priority: Critical


There are multiple type of keys stored in KSM database
# Volume Key
# Bucket Key
# Object Key
# User Key

Currently they are represented as plain string with different convention, such as
# /volume
# /volume/bucket
# /volume/bucket/key
# $user

this approach makes it so difficult to parse volume/bucket/keys from KSM database. Propose to encapsulate these types of keys into protobuf messages, and take advantage of protobuf to serialize(deserialize) classes to byte arrays (and vice versa).





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