cshuo commented on code in PR #13536:
URL: https://github.com/apache/hudi/pull/13536#discussion_r2196744334


##########
hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/table/action/compact/CompactionTestBase.java:
##########
@@ -140,9 +146,11 @@ protected List<HoodieRecord> 
runNextDeltaCommits(SparkRDDWriteClient client, fin
       assertNoWriteErrors(statusList);
       metaClient = createMetaClient(cfg.getBasePath());
       HoodieTable hoodieTable = getHoodieTable(metaClient, cfg);
-      List<HoodieBaseFile> dataFilesToRead = 
getCurrentLatestBaseFiles(hoodieTable);
-      assertTrue(dataFilesToRead.stream().findAny().isPresent(),
-          "should list the base files we wrote in the delta commit");
+      if (hasBaseFile) {

Review Comment:
   IIUC, you're suggesting such test case. 
   ```
     @Test
     public void 
testNotScheduleCompactionWithOldTimestampForLogsOnlyFileSlice() throws 
Exception {
       ...
       final String firstInstantTime = "001";
       final String secondInstantTime = "004";
       final String compactionInstantTime = "003";
       ...
       assertNull(tryScheduleCompaction(compactionInstantTime, client, cfg), 
"Compaction Instant can be scheduled with older timestamp");
     }
   ```
   
   This case can pass without the fix in this PR, since it's already covered in 
the following check.
   
   
https://github.com/apache/hudi/blob/aa3dcd83fe660daff4d061be7459ddf02d038696/hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/action/compact/plan/generators/BaseHoodieCompactionPlanGenerator.java#L170
   
   I'm actually trying to reproduce the corner case in 
https://github.com/apache/hudi/issues/13534, where there is no base file for a 
file slice, and all logs are filtered out by complete time.



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