Jing Zhao created HDFS-9011:
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Summary: Support splitting BlockReport of a storage into multiple
RPC
Key: HDFS-9011
URL: https://issues.apache.org/jira/browse/HDFS-9011
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Jing Zhao
Assignee: Jing Zhao
Currently if a DataNode has too many blocks (more than 1m by default), it sends
multiple RPC to the NameNode for the block report, each RPC contains report for
a single storage. However, in practice we've seen sometimes even a single
storage can contains large amount of blocks and the report even exceeds the max
RPC data length. It may be helpful to support sending multiple RPC for the
block report of a storage.
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