[Data] Deflake test_batching_pyarrow_table_with_many_chunks (ray-pr…

…oject#38246)

test_batching_pyarrow_table_with_many_chunks checks that it takes less than 20 seconds to batch a PyArrow table. Sometimes, it takes slightly longer than expected, so the test fails. This PR deflakes the test by increasing the threshold.

See https://buildkite.com/anyscale/runtime/builds/292#0189bbd2-a266-4e7d-bebd-240cd2f7a5bd.

Signed-off-by: Balaji Veeramani <balaji@anyscale.com>
Signed-off-by: harborn <gangsheng.wu@intel.com>

python/ray/data/tests/test_batcher.py

@@ -203,7 +203,7 @@ def test_batching_pyarrow_table_with_many_chunks():
     while shuffling_batcher.has_any():
         shuffling_batcher.next_batch()
     duration = time.perf_counter() - start
-    assert duration < 20
+    assert duration < 30
 
 
 @pytest.mark.parametrize(