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https://issues.apache.org/jira/browse/HADOOP-19474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17938554#comment-17938554
]
ASF GitHub Bot commented on HADOOP-19474:
-----------------------------------------
anujmodi2021 commented on code in PR #7421:
URL: https://github.com/apache/hadoop/pull/7421#discussion_r2013935730
##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/VersionedFileStatus.java:
##########
@@ -0,0 +1,127 @@
+/**
+ * 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.azurebfs.services;
+
+import org.apache.hadoop.fs.EtagSource;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.permission.FsPermission;
+
+/**
+ * A File status with version info extracted from the etag value returned
+ * in a LIST or HEAD request.
+ * The etag is included in the java serialization.
+ */
+public class VersionedFileStatus extends FileStatus implements EtagSource {
+
+ /**
+ * The superclass is declared serializable; this subclass can also
+ * be serialized.
+ */
+ private static final long serialVersionUID = -2009013240419749458L;
+
+ /**
+ * The etag of an object.
+ * Not-final so that serialization via reflection will preserve the value.
+ */
+ private String version;
+
+ private String encryptionContext;
+
+ public VersionedFileStatus(
+ final String owner, final String group, final FsPermission fsPermission,
final boolean hasAcl,
+ final long length, final boolean isdir, final int blockReplication,
+ final long blocksize, final long modificationTime, final Path path,
+ final String version, final String encryptionContext) {
+ super(length, isdir, blockReplication, blocksize, modificationTime, 0,
+ fsPermission,
+ owner,
+ group,
+ null,
+ path,
+ hasAcl, false, false);
+
+ this.version = version;
+ this.encryptionContext = encryptionContext;
+ }
+
+ /** Compare if this object is equal to another object.
+ * @param obj the object to be compared.
+ * @return true if two file status has the same path name; false if not.
+ */
+ @Override
+ public boolean equals(Object obj) {
+ if (!(obj instanceof FileStatus)) {
+ return false;
+ }
+
+ FileStatus other = (FileStatus) obj;
+
+ if (!this.getPath().equals(other.getPath())) {// compare the path
+ return false;
+ }
+
+ if (other instanceof VersionedFileStatus) {
+ return this.version.equals(((VersionedFileStatus) other).version);
+ }
+
+ return true;
+ }
+
+ /**
+ * Returns a hash code value for the object, which is defined as
+ * the hash code of the path name.
+ *
+ * @return a hash code value for the path name and version
+ */
+ @Override
+ public int hashCode() {
+ int hash = getPath().hashCode();
+ hash = 89 * hash + (this.version != null ? this.version.hashCode() : 0);
+ return hash;
+ }
+
+ /**
+ * Returns the version of this FileStatus
+ *
+ * @return a string value for the FileStatus version
+ */
+ public String getVersion() {
+ return this.version;
+ }
+
+ @Override
+ public String getEtag() {
Review Comment:
Taken
##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsHttpOperation.java:
##########
@@ -668,6 +660,10 @@ protected boolean isConnectionDisconnectedOnError() {
return connectionDisconnectedOnError;
}
+ protected void setListResultSchema(final ListResultSchema listResultSchema) {
Review Comment:
Taken
> ABFS: [FnsOverBlob] Listing Optimizations to avoid multiple iteration over
> list response.
> -----------------------------------------------------------------------------------------
>
> Key: HADOOP-19474
> URL: https://issues.apache.org/jira/browse/HADOOP-19474
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.5.0, 3.4.1
> Reporter: Anuj Modi
> Assignee: Anuj Modi
> Priority: Major
> Labels: pull-request-available
>
> On blob endpoint, there are a couple of handling that is needed to be done on
> client side.
> This involves:
> # Parsing of xml response and converting them to VersionedFileStatus list
> # Removing duplicate entries for non-empty explicit directories coming due
> to presence of the marker files
> # Trigerring Rename recovery on the previously failed rename indicated by
> the presence of pending json file.
> Currently all three are done in a separate iteration over whole list. This is
> to pbring all those things to a common place so that single iteration over
> list reposne can handle all three.
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