imay commented on a change in pull request #2630: Support bitmap index for more
type
URL: https://github.com/apache/incubator-doris/pull/2630#discussion_r365130276
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File path: be/src/util/frame_of_reference_coding.h
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@@ -37,16 +41,23 @@ namespace doris {
// 1. Body:
// BitPackingFrame * FrameCount
// 2. Footer:
-// (2 bit OrderFlag + 6 bit BitWidth) * FrameCount
+//
+// (8 bit OrderFlag + 8 bit BitWidth) * FrameCount
// 8 bit FrameValueNum
// 32 bit ValuesNum
//
-// The not ascending order BitPackingFrame format:
-// MinValue, (Value - MinVale) * FrameValueNum
+// if the OrderFlag & 2 == 2: save original values
Review comment:
why not comment as
OrderFlag
case 2:
case 1:
case 0:
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