manuzhang commented on PR #12707:
URL: https://github.com/apache/iceberg/pull/12707#issuecomment-2774457965

   The flaky test is usually when we need to wait for a condition to come true. 
In this case,
   
   ```
       AtomicInteger barrier = new AtomicInteger(0);
       Tasks.range(threadsCount)
           .stopOnFailure()
           .throwFailureWhenFinished()
           .executeWith(executorService)
           .run(
               index -> {
                 for (int numCommittedFiles = 0;
                     numCommittedFiles < numberOfCommitedFilesPerThread;
                     numCommittedFiles++) {
                   final int currentFilesCount = numCommittedFiles;
                   Awaitility.await()
                       .pollInterval(Duration.ofMillis(10))
                       .atMost(Duration.ofSeconds(10))
                       .until(() -> barrier.get() >= currentFilesCount * 
threadsCount);
                   
tableWithHighRetries.newFastAppend().appendFile(file).commit();
                   barrier.incrementAndGet();
                 }
               });
   ```


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