huaxingao commented on code in PR #18800:
URL: https://github.com/apache/iceberg/pull/18800#discussion_r4475126011
##########
core/src/test/java/org/apache/iceberg/TestInternalData.java:
##########
@@ -174,6 +180,57 @@ public void
registerToleratesExceptionInInitializerErrorOnInvoke() {
assertThatNoException().isThrownBy(() ->
register(ThrowsInitErrorOnInvoke.class.getName()));
}
+ @Test
+ void registersParquetWhenTheContextClassLoaderCannotSeeIceberg() throws
Exception {
+ // formats are registered once per loaded copy of InternalData, so this
needs a fresh copy
+ try (URLClassLoader isolated =
+ new URLClassLoader(testClasspath(),
ClassLoader.getPlatformClassLoader())) {
+ AtomicReference<Object> writeBuilder = new AtomicReference<>();
+ AtomicReference<Throwable> failure = new AtomicReference<>();
+ Thread thread =
+ new Thread(
+ () -> {
+ try {
+ writeBuilder.set(writeParquet(isolated));
+ } catch (InvocationTargetException e) {
+ failure.set(e.getCause());
+ } catch (Throwable e) {
+ failure.set(e);
+ }
+ });
+ thread.setContextClassLoader(null);
+ thread.start();
+ thread.join();
+
+ assertThat(failure.get()).isNull();
+ assertThat(writeBuilder.get()).isNotNull();
+ }
+ }
+
+ private Object writeParquet(ClassLoader loader) throws
ReflectiveOperationException {
+ Class<?> internalData = Class.forName("org.apache.iceberg.InternalData",
true, loader);
+ assertThat(internalData).isNotSameAs(InternalData.class);
+
+ Class<?> fileFormat = Class.forName("org.apache.iceberg.FileFormat", true,
loader);
+ Class<?> outputFile = Class.forName("org.apache.iceberg.io.OutputFile",
true, loader);
+ Object parquet = fileFormat.getField("PARQUET").get(null);
+ Object file =
+ Class.forName("org.apache.iceberg.Files", true, loader)
+ .getMethod("localOutput", File.class)
+ .invoke(null, tempDir.resolve("internal.parquet").toFile());
+
+ return internalData.getMethod("write", fileFormat,
outputFile).invoke(null, parquet, file);
+ }
+
+ private static URL[] testClasspath() throws MalformedURLException {
Review Comment:
Done. Thanks
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