maobaolong created HDFS-15133:
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Summary: Use rocksdb to store NameNode inode and blockInfo
Key: HDFS-15133
URL: https://issues.apache.org/jira/browse/HDFS-15133
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: maobaolong
Maybe we don't need checkpoint to a fsimage file, the rocksdb checkpoint can
achieve the same request.
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