w41ter commented on code in PR #33817:
URL: https://github.com/apache/doris/pull/33817#discussion_r1574240196
##########
fe/fe-core/src/main/java/org/apache/doris/catalog/Env.java:
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@@ -1601,6 +1605,23 @@ private void transferToMaster() {
}
}
+ /*
+ * Advance the id generator, ensuring it doesn't roll back.
+ *
+ * If we need to support time travel, the next id cannot be rolled back to
avoid
+ * errors in the corresponding relationship of the metadata recorded in
BE/MS.
+ */
+ void advanceNextId() {
+ long currentId = idGenerator.getBatchEndId();
+ long currentNanos = System.nanoTime();
+ long nextId = currentId + 1;
+ if (nextId < currentNanos) {
+ nextId = currentNanos;
+ }
+ idGenerator.setId(nextId);
Review Comment:
These id Generators are related to queries, not persistent meta.
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