* Exports metric for WAL write errors Signed-off-by: John McBride <jpmmcbride@gmail.com> * Correct name for counter Signed-off-by: John McBride <jpmmcbride@gmail.com> * Move WAL write failure to wal.go Signed-off-by: John McBride <jpmmcbride@gmail.com> * WAL write fail metric moved to Log for external consumers Signed-off-by: John McBride <jpmmcbride@gmail.com>