rdblue commented on a change in pull request #3906:
URL: https://github.com/apache/iceberg/pull/3906#discussion_r786244485
##########
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.");
Review comment:
I don't think that this warning is necessary. This is a how Avro has
always worked, so there is nothing new happening when we use the thread context
loader.
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