yittg commented on a change in pull request #3906:
URL: https://github.com/apache/iceberg/pull/3906#discussion_r785623253
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File path: core/src/main/java/org/apache/iceberg/avro/Avro.java
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@@ -553,15 +558,20 @@ public static ReadBuilder read(InputFile file) {
public static class ReadBuilder {
private final InputFile file;
private final Map<String, String> renames = Maps.newLinkedHashMap();
- private ClassLoader loader =
Thread.currentThread().getContextClassLoader();
+ private ClassLoader loader = null;
private NameMapping nameMapping;
private boolean reuseContainers = false;
private org.apache.iceberg.Schema schema = null;
private Function<Schema, DatumReader<?>> createReaderFunc = null;
private BiFunction<org.apache.iceberg.Schema, Schema, DatumReader<?>>
createReaderBiFunc = null;
private final Function<Schema, DatumReader<?>> defaultCreateReaderFunc =
readSchema -> {
GenericAvroReader<?> reader = new GenericAvroReader<>(readSchema);
- reader.setClassLoader(loader);
+ ClassLoader classLoader = loader;
+ if (classLoader == null) {
+ LOG.warn("Classloader for avro reader not set, use the thread context
classloader.");
+ classLoader = Thread.currentThread().getContextClassLoader();
+ }
+ reader.setClassLoader(classLoader);
Review comment:
@rdblue I'm not sure if we should just requireNonNull(loader) here.
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