[GitHub] [arrow] kszucs commented on a change in pull request #7783: ARROW-9504: [C++/Python] Segmentation fault on ChunkedArray.take

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kszucs commented on a change in pull request #7783:
URL: https://github.com/apache/arrow/pull/7783#discussion_r455723033



##########
File path: python/pyarrow/tests/test_compute.py
##########
@@ -284,6 +284,66 @@ def test_take_indices_types():
             arr.take(indices)
 
 
+def test_take_on_chunked_array():
+    # ARROW-9504
+    arr = pa.chunked_array([
+        [
+            "m",
+            "J",
+            "q",
+            "k",
+            "t"
+        ],
+        [
+            "m",
+            "J",
+            "q",
+            "k",
+            "t"
+        ]
+    ])
+
+    indices = np.array([0, 5, 1, 6, 2, 7, 3, 8, 4, 9])
+    result = arr.take(indices)
+    expected = pa.chunked_array([
+        "m",
+        "m",
+        "J",
+        "J",
+        "q",
+        "q",
+        "k",
+        "k",
+        "t"
+        "t"
+    ])

Review comment:
       To use a chunked array as indices because the number of output chunks depends on it.




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