yyanyy commented on a change in pull request #2333:
URL: https://github.com/apache/iceberg/pull/2333#discussion_r594818223
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File path: core/src/main/java/org/apache/iceberg/CatalogUtil.java
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@@ -197,10 +197,17 @@ public static Catalog buildIcebergCatalog(String name,
Map<String, String> optio
/**
* Load a custom {@link FileIO} implementation.
* <p>
- * The implementation must have a no-arg constructor.
+ * The implementation should have a no-arg constructor.
* If the class implements {@link Configurable},
* a Hadoop config will be passed using {@link
Configurable#setConf(Configuration)}.
- * {@link FileIO#initialize(Map properties)} is called to complete the
initialization.
+ *
+ * For compatibility with HadoopFileIO,
Review comment:
I wonder if we starts to support 1-arg constructor as a valid case in
the code and prints error messages about it, should we mention this as a fully
supported case instead of a backward compatibility support? Especially that the
reason for you to choose this option is performance concern.
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