Chris Nauroth created HDFS-7382: ----------------------------------- Summary: DataNode in secure mode may throw NullPointerException if client connects before DataNode registers itself with NameNode. Key: HDFS-7382 URL: https://issues.apache.org/jira/browse/HDFS-7382 Project: Hadoop HDFS Issue Type: Bug Components: datanode Reporter: Chris Nauroth Assignee: Chris Nauroth Priority: Minor
{{SaslDataTransferServer#receive}} needs to check if the DataNode is listening on a privileged port. It does this by checking the address from the {{DatanodeID}}. However, there is a window of time when this will be {{null}}. If a client is still holding a {{LocatedBlock}} that references that DataNode and chooses to connect, then there is a risk of getting a {{NullPointerException}}. -- This message was sent by Atlassian JIRA (v6.3.4#6332)