We had a lot of datanodes lock up nearly simaltanuously in our Accumulo instance. Many more of the tservers also went offline. After about two hours we were able to get all the datanodes and tservers back online with no HDFS blocks lost. However we have two tservers throwing about 70 exceptions caused by:
java.IO.EOFException: ..../accumulo/recovery/.../part-r-00000/index not a SequenceFile. For all the exceptions all the "..../accumulo/recovery/.../part-r-00000/index" files are empty but their associated ..../accumulo/recovery/.../part-r-00000/data file is not. Any suggestions on how we can best recover from these exceptions?