YARN NodeManager Failed to Start

I upgraded my CDH, one of my NodeNamager cannot be brought up. NullPointer Exceptions were found in error log:

I tried deleting all ZooKeeper-related configs(which you can find it from Manually Upgrade CDH 5.2 in CM 5, exact the YARN part), not working. Deleted the NodeManager instance and then reinstall, same. Many ‘Recovering application’ … Continue reading “YARN NodeManager Failed to Start”