danny0405 commented on a change in pull request #4336:
URL: https://github.com/apache/hudi/pull/4336#discussion_r772930657
##########
File path:
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/metadata/HoodieBackedTableMetadataWriter.java
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@@ -706,7 +706,20 @@ protected void
compactIfNecessary(AbstractHoodieWriteClient writeClient, String
}
}
- protected void doClean(AbstractHoodieWriteClient writeClient, String
instantTime) {
+ protected void cleanIfNecessary(AbstractHoodieWriteClient writeClient,
String instantTime) {
+ Option<HoodieInstant> lastCompletedCompactionInstant =
metadataMetaClient.reloadActiveTimeline()
+ .getCommitTimeline().filterCompletedInstants().lastInstant();
+ if (lastCompletedCompactionInstant.isPresent()
+ && metadataMetaClient.getActiveTimeline().filterCompletedInstants()
+
.findInstantsAfter(lastCompletedCompactionInstant.get().getTimestamp()).countInstants()
< 3) {
+ // do not clean the log files immediately after compaction to give some
buffer time for metadata table reader,
Review comment:
I guess so, we need some protection logic too for the MOR table log
files or even COW table parquet files, because if we write COW table very
frequently (like each 10 seconds), the reader would very probably encounter
`FileNotFoundException` .
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