QIAN Shangshu

HBASE-29006. The region assignment retry logic in unconstrained and may cause workload amplification

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See [HBASE-29006](https://issues.apache.org/jira/browse/HBASE-29006) We add a map to record the number of retried in the region assignment. If the retry count exceeds the predefined threshold (`MAX_RETRY_LIMIT`), the request will be blocked,...

HDFS-17780. The retry logic in IncrementalBlockReport may bypass the configured IBR interval, causing contention on NameNode

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### Description of PR As described in [HDFS-17780](https://issues.apache.org/jira/browse/HDFS-17780), the retry logic in sendIBR() can bypass the configuration of `dfs.blockreport.incremental.intervalMsec` and cause the IBR to be sent with every heartbeat. The...