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https://issues.apache.org/jira/browse/HADOOP-19522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17943179#comment-17943179
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ASF GitHub Bot commented on HADOOP-19522:
-----------------------------------------
anmolanmol1234 commented on code in PR #7559:
URL: https://github.com/apache/hadoop/pull/7559#discussion_r2037136377
##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/BlobRenameHandler.java:
##########
@@ -192,6 +196,13 @@ private boolean finalSrcRename() throws
AzureBlobFileSystemException {
tracingContext.setOperatedBlobCount(operatedBlobCount.get() + 1);
try {
return renameInternal(src, dst);
+ } catch(AbfsRestOperationException e) {
+ if (e.getStatusCode() == HttpURLConnection.HTTP_CONFLICT) {
+ // If the destination path already exists, then delete the source path.
+ getAbfsClient().deleteBlobPath(src, null, tracingContext);
Review Comment:
Should we validate that destination has the same Etag as the source before
assuming that if it already exists, it is safe to delete the source ?
> ABFS: [FnsOverBlob] Rename Recovery Should Succeed When Marker File Exists
> with Destination Directory
> -----------------------------------------------------------------------------------------------------
>
> Key: HADOOP-19522
> URL: https://issues.apache.org/jira/browse/HADOOP-19522
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.5.0, 3.4.1
> Reporter: Manish Bhatt
> Assignee: Manish Bhatt
> Priority: Major
> Labels: pull-request-available
>
> On the blob endpoint, since rename is not a direct operation but a
> combination of two operations—copy and delete—in the case of directory
> rename, we first rename all the blobs that have the source prefix and, at the
> end, rename the source to the destination.
> In the normal rename flow, renaming is not allowed if the destination already
> exists. However, in the case of recovery, there is a possibility that some
> files have already been renamed from the source to the destination. With the
> recent change ([HADOOP-19474] ABFS: [FnsOverBlob] Listing Optimizations to
> avoid multiple iteration over list response. - ASF JIRA), where we create a
> marker if the path is implicit, rename recovery will fail at the end when it
> tries to rename the source to the destination after renaming all the files.
> To fix this, while renaming the source to the destination, if we encounter an
> error indicating that the path already exists, we will suppress the error and
> mark the rename recovery as successful.
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