diff --git a/paimon-core/src/test/java/org/apache/paimon/crosspartition/IndexBootstrapTest.java b/paimon-core/src/test/java/org/apache/paimon/crosspartition/IndexBootstrapTest.java
index 50df6e4971ec..a96ee1429740 100644
--- a/paimon-core/src/test/java/org/apache/paimon/crosspartition/IndexBootstrapTest.java
+++ b/paimon-core/src/test/java/org/apache/paimon/crosspartition/IndexBootstrapTest.java
@@ -97,6 +97,11 @@ public void testBoostrap() throws Exception {
                 .containsExactlyInAnyOrder(
                         GenericRow.of(2, 1, 3), GenericRow.of(4, 2, 5), GenericRow.of(6, 3, 7));
         result.clear();
+
+        // In ParallelExecution, latch.countDown first, then close the reader, it may not be closed
+        // here, (this is good, beneficial for query speed) but TableTestBase.after will check leak
+        // streams. So sleep here to avoid unstable.
+        Thread.sleep(1000);
     }
 
     @Test