JiangHua Zhu created HDFS-15901: ----------------------------------- Summary: Solve the problem of DN repeated block reports occupying too many RPCs during Safemode Key: HDFS-15901 URL: https://issues.apache.org/jira/browse/HDFS-15901 Project: Hadoop HDFS Issue Type: Improvement Reporter: JiangHua Zhu
When the cluster exceeds thousands of nodes, we want to restart the NameNode service, and all DataNodes send a full Block action to the NameNode. During SafeMode, some DataNodes may send blocks to NameNode multiple times, which will take up too much RPC. In fact, this is unnecessary. In this case, some block report leases will fail or time out, and in extreme cases, the NameNode will always stay in Safe Mode. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org