tadeja commented on code in PR #49462:
URL: https://github.com/apache/arrow/pull/49462#discussion_r3196700806
##########
cpp/src/arrow/json/reader_test.cc:
##########
@@ -290,6 +290,27 @@ TEST(ReaderTest, MultipleChunksParallel) {
AssertTablesEqual(*serial, *threaded);
}
+// Regression test for intermittent threading crashes on MinGW.
+// Run this test multiple times manually to stress-test:
+// while build/debug/arrow-json-test
+// --gtest_filter=ReaderTest.MultipleChunksParallelRegression; do :; done
+// See https://github.com/apache/arrow/issues/49272
+TEST(ReaderTest, MultipleChunksParallelRegression) {
+ int64_t count = 1 << 10;
+ ReadOptions read_options;
+ read_options.block_size = static_cast<int>(count / 2);
+ read_options.use_threads = true;
+ ParseOptions parse_options;
+
+ std::string json;
+ for (int64_t i = 0; i < count; ++i) {
+ json += "{\"a\":" + std::to_string(i) + "}\n";
+ }
+
+ ASSERT_OK_AND_ASSIGN(auto table, ReadToTable(std::move(json), read_options,
parse_options));
Review Comment:
```suggestion
ASSERT_OK_AND_ASSIGN(auto table,
ReadToTable(std::move(json), read_options,
parse_options));
```
[The Lint C++
Format](https://github.com/apache/arrow/actions/runs/25446022661/job/74650231104?pr=49462#step:5:96)
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