HA: Send block report from datanode to both active and standby namenodes
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Key: HDFS-1971
URL: https://issues.apache.org/jira/browse/HDFS-1971
Project: Hadoop HDFS
Issue Type: Sub-task
Components: data-node, name-node
Reporter: Suresh Srinivas
Assignee: Sanjay Radia
To enable hot standby namenode, the standby node must have current information
for - namenode state (image + edits) and block location information. This jira
addresses keeping the block location information current in the standby node.
To do this, the proposed solution is to send block reports from the datanodes
to both the active and the standby namenode.
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