[SPARK-17914][SQL] Added a comment about truncation

aokolnychyi · aokolnychyi · commit a498f83cda31 · 2017-06-10T10:12:04.000+02:00
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala
@@ -399,6 +399,7 @@ object DateTimeUtils {
       digitsMilli += 1
     }
 
+    // We are truncating the nanosecond part, which results in loss of precision
     while (digitsMilli > 6) {
       segments(6) /= 10
       digitsMilli -= 1

Original file line number	Diff line number	Diff line change
`@@ -399,6 +399,7 @@ object DateTimeUtils {`
`399`	`399`	`digitsMilli += 1`
`400`	`400`	`}`
`401`	`401`
	`402`	`+ // We are truncating the nanosecond part, which results in loss of precision`
`402`	`403`	`while (digitsMilli > 6) {`
`403`	`404`	`segments(6) /= 10`
`404`	`405`	`digitsMilli -= 1`