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[GLUTEN-8330][VL] Improve convert the viewfs path to hdfs path (apach…
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78 changes: 78 additions & 0 deletions
78
gluten-substrait/src/main/scala/org/apache/hadoop/fs/viewfs/ViewFileSystemUtils.scala
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| /* | ||
| * 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.hadoop.fs.viewfs | ||
|
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| import org.apache.hadoop.conf.Configuration | ||
| import org.apache.hadoop.fs.{FileSystem, Path} | ||
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|
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| import scala.collection.mutable | ||
|
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| object ViewFileSystemUtils { | ||
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| /** | ||
| * Convert the viewfs path to hdfs path. Similar to ViewFileSystem.resolvePath, but does not make | ||
| * RPC calls. | ||
| */ | ||
| def convertViewfsToHdfs(f: String, hadoopConfig: Configuration): String = { | ||
| val path = new Path(f) | ||
| FileSystem.get(path.toUri, hadoopConfig) match { | ||
| case vfs: ViewFileSystem => | ||
| val fsStateField = vfs.getClass.getDeclaredField("fsState") | ||
| fsStateField.setAccessible(true) | ||
| val fsState = fsStateField.get(vfs).asInstanceOf[InodeTree[FileSystem]] | ||
| val res = fsState.resolve(f, true) | ||
| if (res.isInternalDir) { | ||
| f | ||
| } else { | ||
| Path.mergePaths(new Path(res.targetFileSystem.getUri), res.remainingPath).toString | ||
| } | ||
| case otherFileSystem => | ||
| otherFileSystem.resolvePath(path).toString | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * Convert a sequence of viewfs path to a sequence of hdfs path. | ||
| * @param paths | ||
| * sequence of viewfs path | ||
| * @param viewfsToHdfsCache | ||
| * A map use to cache converted paths | ||
| * @param hadoopConfig | ||
| * Hadoop configuration | ||
| * @return | ||
| * sequence of hdfs path | ||
| */ | ||
| def convertViewfsToHdfs( | ||
| paths: Seq[String], | ||
| viewfsToHdfsCache: mutable.Map[String, String], | ||
| hadoopConfig: Configuration): Seq[String] = { | ||
| paths.map { | ||
| path => | ||
| if (path.startsWith("viewfs")) { | ||
| val pathSplit = path.split(Path.SEPARATOR) | ||
| val prefixIndex = pathSplit.size - 1 | ||
| val pathPrefix = pathSplit.take(prefixIndex).mkString(Path.SEPARATOR) | ||
| val hdfsPath = viewfsToHdfsCache.getOrElseUpdate( | ||
| pathPrefix, | ||
| convertViewfsToHdfs(pathPrefix, hadoopConfig)) | ||
| hdfsPath + Path.SEPARATOR + pathSplit.drop(prefixIndex).mkString(Path.SEPARATOR) | ||
| } else { | ||
| path | ||
| } | ||
| } | ||
| } | ||
| } |