imay commented on a change in pull request #1678: Add rowset id generator to FE
and BE
URL: https://github.com/apache/incubator-doris/pull/1678#discussion_r318596408
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File path: be/src/olap/olap_common.h
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@@ -241,7 +246,83 @@ typedef std::set<uint32_t> UniqueIdSet;
// Column unique Id -> column id map
typedef std::map<ColumnId, ColumnId> UniqueIdToColumnIdMap;
-typedef int64_t RowsetId;
+// 8 bit, id version
+// 120 bit, backend random number generated by uuid
+// 64 bit, inc number from 0
+struct RowsetId {
+ int8_t version = 0;
Review comment:
you can use bit field
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