danny0405 commented on a change in pull request #5030:
URL: https://github.com/apache/hudi/pull/5030#discussion_r825624914
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File path:
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/action/compact/HoodieCompactor.java
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@@ -280,8 +281,11 @@ HoodieCompactionPlan generateCompactionPlan(
.getLatestFileSlices(partitionPath)
.filter(slice ->
!fgIdsInPendingCompactionAndClustering.contains(slice.getFileGroupId()))
.map(s -> {
+ // In most business scenarios, the latest data is in the latest
delta log file, so we sort it from large
+ // to small according to the instance time, which can largely avoid
rewriting the data in the
+ // compact process, and then optimize the compact time
List<HoodieLogFile> logFiles =
Review comment:
What do you mean by `avoid rewriting the data in the compact process`
here ? Shouldn't the reader have the same merged content no matter what the
read sequence is for log files ?
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