diff --git a/core/src/main/scala/org/apache/spark/input/FixedLengthBinaryRecordReader.scala b/core/src/main/scala/org/apache/spark/input/FixedLengthBinaryRecordReader.scala
index 5164a74bec..36a1e5d475 100644
--- a/core/src/main/scala/org/apache/spark/input/FixedLengthBinaryRecordReader.scala
+++ b/core/src/main/scala/org/apache/spark/input/FixedLengthBinaryRecordReader.scala
@@ -115,7 +115,7 @@ private[spark] class FixedLengthBinaryRecordReader
     if (currentPosition < splitEnd) {
       // setup a buffer to store the record
       val buffer = recordValue.getBytes
-      fileInputStream.read(buffer, 0, recordLength)
+      fileInputStream.readFully(buffer)
       // update our current position
       currentPosition = currentPosition + recordLength
       // return true