Fix accidently empty lines in meminfo_linux (#1671)

* Fix accidently empty lines in meminfo_linux

Signed-off-by: qwertysun <qwertysun@tencent.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/collector/meminfo_linux.go b/collector/meminfo_linux.go
index 9aac018..c5de432 100644
--- a/collector/meminfo_linux.go
+++ b/collector/meminfo_linux.go
@@ -45,6 +45,10 @@ func parseMemInfo(r io.Reader) (map[string]float64, error) {
         for scanner.Scan() {
                 line := scanner.Text()
                 parts := strings.Fields(line)
+                // Workaround for empty lines occasionally occur in CentOS 6.2 kernel 3.10.90.
+                if len(parts) == 0 {
+                        continue
+                }
                 fv, err := strconv.ParseFloat(parts[1], 64)
                 if err != nil {
                         return nil, fmt.Errorf("invalid value in meminfo: %s", err)