Take a look at the master logs for where the WAL was sorted to the
directory.  Then look to see if those WALs are still around and contain

Where is this this EOF exception, on a tserver?

Is the master log complaining about anything?


On Mon, Oct 17, 2016 at 6:15 PM, Jeff Kubina <> wrote:

> 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?

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