github-actions[bot] commented on code in PR #69528:
URL: https://github.com/apache/doris/pull/69528#discussion_r4367453269


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fe/fe-core/src/main/java/org/apache/doris/tablefunction/HadoopTvfAdmission.java:
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@@ -0,0 +1,477 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package org.apache.doris.tablefunction;
+
+import org.apache.doris.common.Config;
+import org.apache.doris.common.util.LocationPath;
+import org.apache.doris.nereids.exceptions.AnalysisException;
+
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * TVF-only admission for Hadoop consumers. Input properties have already been 
normalized by storage.
+ * This module neither loads Hadoop resources nor constructs a filesystem. 
Java strings and native
+ * C strings are projected separately before filesystem selection and 
mount-table interpretation.
+ */
+public final class HadoopTvfAdmission {
+    public enum Access {
+        NATIVE_WRITE,
+        JAVA_DELETE,
+        HADOOP_READ
+    }
+
+    private enum Provider {
+        REMOTE,
+        LOCAL,
+        MOUNT_TABLE,
+        DYNAMIC,
+        UNKNOWN
+    }
+
+    private static final Set<String> REMOTE_SCHEMES = new 
HashSet<>(Arrays.asList(
+            "hdfs", "s3a", "s3n", "oss", "ofs", "jfs", "abfs", "abfss", 
"wasb", "wasbs", "gs", "cosn"));
+    private static final Set<String> REMOTE_IMPLEMENTATIONS = new 
HashSet<>(Arrays.asList(
+            "org.apache.hadoop.hdfs.DistributedFileSystem",
+            "org.apache.hadoop.fs.s3a.S3AFileSystem",
+            "org.apache.hadoop.fs.azurebfs.AzureBlobFileSystem",
+            "org.apache.hadoop.fs.azurebfs.SecureAzureBlobFileSystem",
+            "org.apache.hadoop.fs.azure.NativeAzureFileSystem",
+            "org.apache.hadoop.fs.aliyun.oss.AliyunOSSFileSystem",
+            "com.aliyun.jindodata.oss.JindoOssFileSystem",
+            "org.apache.hadoop.fs.obs.OBSFileSystem",
+            "com.google.cloud.hadoop.fs.gcs.GoogleHadoopFileSystem"));
+
+    private final Access access;
+    private final Map<String, String> properties = new HashMap<>();
+
+    private HadoopTvfAdmission(Access access, Map<String, String> normalized, 
boolean nativeConsumer) {
+        this.access = access;
+        for (Map.Entry<String, String> entry : normalized.entrySet()) {
+            // parse_properties / generateHdfsParam consumes the canonical 
NameNode before JNI.
+            if (nativeConsumer && 
"fs.defaultFS".equalsIgnoreCase(entry.getKey())) {
+                continue;
+            }
+            String key = (nativeConsumer ? nativeStringPrefix(entry.getKey()) 
: entry.getKey()).trim();
+            String value = nativeConsumer ? 
nativeStringPrefix(entry.getValue()) : entry.getValue();
+            String previous = properties.put(key, value);
+            if (previous != null && !previous.equals(value) && 
isRoutingKey(key)) {
+                reject();
+            }
+        }
+    }
+
+    /** Reject local/unknown Hadoop TVF routes before listing, deletion, 
schema discovery or data IO. */
+    public static void check(Access access, String path, Map<String, String> 
normalized) {
+        if (access != Access.HADOOP_READ && Config.enable_local_tvf) {
+            return;
+        }
+        try {
+            if (access == Access.NATIVE_WRITE) {
+                String nameNode = nativeNameNode(access, normalized);
+                URI output = nativeFileUri(access, path + "doris-tvf-file", 
nameNode);
+                String parent = output.getPath();
+                parent = parent.substring(0, parent.lastIndexOf('/') + 1);
+                if (parent.length() > 1) {
+                    parent = parent.substring(0, parent.length() - 1);
+                }
+                new HadoopTvfAdmission(access, normalized, 
true).checkNative(nameNode, parent);
+            } else {
+                HadoopTvfAdmission javaConsumer = new 
HadoopTvfAdmission(access, normalized, false);
+                // Project the Java consumer independently from native 
convert_path/JNI.
+                URI javaPath = hadoopPathUri(path.trim());
+                javaConsumer.checkRoute(javaPath, javaPath.getPath(), new 
HashSet<>());
+                if (access == Access.HADOOP_READ) {
+                    // FileQueryScanNode sends this filesystem identifier in 
range.fs_name. BE
+                    // falls back to hdfs_params.fs_name only when that range 
field is empty.
+                    URI fileUri = LocationPath.of(path).getPath().toUri();
+                    String nameNode = fileUri.getScheme() + "://" + 
fileUri.getAuthority();
+                    if (nameNode.isEmpty()) {
+                        nameNode = nativeNameNode(access, normalized);
+                    }
+                    HadoopTvfAdmission nativeConsumer = new 
HadoopTvfAdmission(access, normalized, true);
+                    nativeConsumer.checkNativeRead(nameNode, path);
+                    // Schema RPCs have no range.fs_name; they use 
THdfsParams.fs_name instead.
+                    nativeConsumer.checkNativeRead(nativeNameNode(access, 
normalized), path);
+                }
+            }
+        } catch (URISyntaxException e) {
+            new HadoopTvfAdmission(access, normalized, false).reject();
+        }
+    }
+
+    private static String nativeNameNode(Access access, Map<String, String> 
normalized) {
+        String result = null;
+        for (Map.Entry<String, String> entry : normalized.entrySet()) {
+            if ("fs.defaultFS".equalsIgnoreCase(entry.getKey())) {
+                if (result != null && !result.equals(entry.getValue())) {
+                    reject(access);
+                }
+                result = entry.getValue();
+            }
+        }
+        return result == null ? "" : result;
+    }
+
+    private void checkNative(String nameNode, String path) throws 
URISyntaxException {
+        nameNode = selector(nativeStringPrefix(nameNode)).trim();
+        if (nameNode.isEmpty() && access == Access.NATIVE_WRITE) {
+            // BE passes fs_name.c_str(), never NULL. libhdfs prefixes this 
empty string
+            // with hdfs://, whose URI construction fails before any 
filesystem is selected.
+            // Preserve existing analysis; execution reports the invalid 
NameNode as before.
+            return;
+        }
+        if ("default".equals(nameNode) || nameNode.isEmpty()) {
+            reject();
+        }
+        checkRoute(new URI(nameNode.contains("://") ? nameNode : "hdfs://" + 
nameNode),
+                path, new HashSet<>());
+    }
+
+    private void checkNativeRead(String nameNode, String path) throws 
URISyntaxException {
+        checkNative(nameNode, nativeFileUri(access, path, nameNode).getPath());
+    }
+
+    private List<URI> defaults() throws URISyntaxException {
+        List<URI> defaults = new ArrayList<>();
+        for (String key : Arrays.asList("fs.defaultFS", "fs.default.name")) {
+            String value = property(key);
+            if (value != null) {
+                value = selector(value).trim();
+                defaults.add(new URI("local".equals(value) ? "file:///"
+                        : (uriScheme(value).isEmpty() ? "hdfs://" + value : 
value)));

Review Comment:
   [P2] Preserve Hadoop's host:port default-filesystem shorthand
   
   With the default `enable_local_tvf=false`, `INSERT INTO 
hdfs('file_path'='/exports/prefix_', 'format'='csv', 
'fs.defaultFS'='namenode:8020', 'delete_existing_files'='true') SELECT 1` now 
fails analysis with `LOCAL TVF is disabled`, although both the write and 
cleanup select remote HDFS. `HdfsProperties` preserves this value and the 
native gate prefixes `hdfs://`, but cleanup reaches `defaults()`: `uriScheme()` 
treats `namenode` as a scheme, so `provider()` rejects it as unknown. Hadoop's 
[getDefaultUri/fixName](https://github.com/apache/doris-thirdparty/blob/hadoop-3.4.2.2-for-doris/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java#L487-L497)
 instead converts slash-free `namenode:8020` to `hdfs://namenode:8020`. Mirror 
that default-filesystem normalization before interpreting the scheme, including 
the legacy default-FS alias, and cover remote cleanup with LOCAL disabled. This 
remote compatibility regression is distinct from the earlier local-pr
 ovider bypass finding.



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