JiangHua Zhu created HDFS-16023:
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Summary: Improve blockReportLeaseId acquisition to avoid repeated
FBR
Key: HDFS-16023
URL: https://issues.apache.org/jira/browse/HDFS-16023
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: JiangHua Zhu
When the NameNode receives the data (FBR) from the DataNode, it will put the
data in the queue (BlockReportProcessingThread#queue), and there will be
threads processing them thereafter.
When the DataNode wants to send data (here, FBR) to the NameNode, it will first
obtain a blockReportLeaseId from the NameNode. If the DataNode data already
exists in the queue, there is no need to assign a blockReportLeaseId to the
DataNode again.
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