pitrou commented on code in PR #38306:
URL: https://github.com/apache/arrow/pull/38306#discussion_r1363462636
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cpp/src/arrow/dataset/file_parquet_encryption_test.cc:
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@@ -58,6 +59,13 @@ class DatasetEncryptionTest : public ::testing::Test {
// partitioning scheme. The function also checks if the written files exist
in the file
// system.
static void SetUpTestSuite() {
+#ifdef ARROW_VALGRIND
+ // Not necessary otherwise, but prevents a Valgrind leak by making sure
+ // OpenSSL initialization is done from the main thread
+ // (see GH-38304 for analysis).
+ ::parquet::encryption::EnsureBackendInitialized();
Review Comment:
Yes, and only under Valgrind (see `#ifdef`).
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