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Ming Ma commented on HDFS-7374: ------------------------------- Yeah, the idea was to use {{DECOMMISSIONED}} node as the source node only when there is no {{NORMAL}} node available. Agree it breaks the state definition. > Allow decommissioning of dead DataNodes > --------------------------------------- > > Key: HDFS-7374 > URL: https://issues.apache.org/jira/browse/HDFS-7374 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: Zhe Zhang > Assignee: Zhe Zhang > > We have seen the use case of decommissioning DataNodes that are already dead > or unresponsive, and not expected to rejoin the cluster. > The logic introduced by HDFS-6791 will mark those nodes as > {{DECOMMISSION_INPROGRESS}}, with a hope that they can come back and finish > the decommission work. If an upper layer application is monitoring the > decommissioning progress, it will hang forever. -- This message was sent by Atlassian JIRA (v6.3.4#6332)