I was not able to restart my name server because I the name server ran out of space. Then I adjusted dfs.datanode.du.reserved to 0, and used tune2fs -m to get some space, but I still could not restart the name node.
I got the following error: java.io.IOException: Incorrect data format. logVersion is -18 but writables.length is 0. Anyone knows how to resolve this issue? Best, Wei
