From 1d9b9aa63415091ccb1475ee85f92b55610afb9e Mon Sep 17 00:00:00 2001
From: Vova Kolmakov <wombatukun@apache.org>
Date: Thu, 11 Jun 2026 16:48:53 +0700
Subject: [PATCH] Core: Fix flaky TestHadoopCommits.testConcurrentFastAppends

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 .../java/org/apache/iceberg/hadoop/TestHadoopCommits.java     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/src/test/java/org/apache/iceberg/hadoop/TestHadoopCommits.java b/core/src/test/java/org/apache/iceberg/hadoop/TestHadoopCommits.java
index 818b16da24ec..be96b959ead9 100644
--- a/core/src/test/java/org/apache/iceberg/hadoop/TestHadoopCommits.java
+++ b/core/src/test/java/org/apache/iceberg/hadoop/TestHadoopCommits.java
@@ -426,8 +426,10 @@ public void testConcurrentFastAppends(@TempDir File dir) throws Exception {
             SCHEMA,
             SPEC,
             ImmutableMap.of(
+                // Use a high retry count so no committer exhausts its retries under the forced
+                // lock-step contention below (matches Test{Jdbc,Hive}TableConcurrency).
                 COMMIT_NUM_RETRIES,
-                String.valueOf(threadsCount),
+                "20",
                 COMMIT_MIN_RETRY_WAIT_MS,
                 "10",
                 COMMIT_MAX_RETRY_WAIT_MS,