Dian Fu created HDFS-6467: ----------------------------- Summary: Format mirror cluster with primary cluster's NamespaceInfo in the runtime Key: HDFS-6467 URL: https://issues.apache.org/jira/browse/HDFS-6467 Project: Hadoop HDFS Issue Type: Sub-task Affects Versions: 3.0.0 Reporter: Dian Fu Fix For: 3.0.0
When a DFSClient write data to datanodes, it will specify a block pool id which is used by datanodes to distinguish the federation this data belongs to. We know that block pool id is generated by namenode when doing format, so different namenodes will have different block pool id. In the sync mode of DR, a DFSClient in the primary cluster will write data to Datanodes both in primary cluster and mirror cluster. So we need guarantee that the block pool id of primary cluster and mirror cluster are the same. -- This message was sent by Atlassian JIRA (v6.2#6252)