[HDFS-7604] Track and display failed DataNode storage locations in NameNode.

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.7.0
• Component/s: datanode, namenode
• Target Version/s: 2.7.0
• Hadoop Flags: Reviewed
• Assignee: Chris Nauroth
• Reporter: Chris Nauroth
• Created: 13/Jan/15 00:44
• Updated: 21/Apr/15 20:59
• Resolved: 16/Feb/15 23:05

Description

During heartbeats, the DataNode can report a list of its storage locations that have been taken out of service due to failure (such as due to a bad disk or a permissions problem). The NameNode can track these failed storage locations and then report them in JMX and the NameNode web UI.

Issue Links

• is related to: HDFS-8194 Add administrative tool to be able to examine the NN's view of DN storages
• is related to: HDFS-7896 HDFS Slow disk detection
• relates to: HDFS-6407 Add sorting and pagination in the datanode tab of the NN Web UI
• requires: HDFS-7632 MiniDFSCluster configures DataNode data directories incorrectly if using more than 1 DataNode and more than 2 storage locations per DataNode.