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https://issues.apache.org/jira/browse/HADOOP-19450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17927736#comment-17927736
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ASF GitHub Bot commented on HADOOP-19450:
-----------------------------------------
anmolanmol1234 commented on code in PR #7364:
URL: https://github.com/apache/hadoop/pull/7364#discussion_r1958111293
##########
hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/ITestAzureBlobFileSystemMkDir.java:
##########
@@ -167,4 +185,139 @@ public void testMkdirWithExistingFilename() throws
Exception {
intercept(FileAlreadyExistsException.class, () -> fs.mkdirs(new
Path("/testFilePath")));
intercept(FileAlreadyExistsException.class, () -> fs.mkdirs(new
Path("/testFilePath/newDir")));
}
+
+ /**
+ * Tests the idempotency of creating a path with retries by simulating
+ * a conflict response (HTTP 409) from the Azure Blob File System client.
+ * The method ensures that the path creation operation retries correctly
+ * with the proper transaction ID headers, verifying idempotency during
+ * failure recovery.
+ *
+ * @throws Exception if any error occurs during the operation.
+ */
+ @Test
+ public void createPathRetryIdempotency() throws Exception {
+ Configuration configuration = new Configuration(getRawConfiguration());
+ configuration.set(FS_AZURE_ENABLE_CLIENT_TRANSACTION_ID, "true");
+ try (AzureBlobFileSystem fs = getFileSystem(configuration)) {
+ assumeRecoveryThroughClientTransactionID(fs, true);
+ AzureBlobFileSystemStore store = Mockito.spy(fs.getAbfsStore());
+ AbfsClientHandler clientHandler = Mockito.spy(store.getClientHandler());
+ AbfsDfsClient abfsClient = (AbfsDfsClient) Mockito.spy(
+ clientHandler.getClient());
+ fs.getAbfsStore().setClient(abfsClient);
+ fs.getAbfsStore().setClientHandler(clientHandler);
+ Mockito.doReturn(abfsClient).when(clientHandler).getIngressClient();
+ final Path nonOverwriteFile = new Path(
+ "/NonOverwriteTest_FileName_" + UUID.randomUUID());
+ final List<AbfsHttpHeader> headers = new ArrayList<>();
+ TestAbfsClient.mockAbfsOperationCreation(abfsClient,
+ new MockIntercept<AbfsRestOperation>() {
+ private int count = 0;
+
+ @Override
+ public void answer(final AbfsRestOperation mockedObj,
+ final InvocationOnMock answer)
+ throws AbfsRestOperationException {
+ if (count == 0) {
+ count = 1;
+ AbfsHttpOperation op = Mockito.mock(AbfsHttpOperation.class);
+ Mockito.doReturn("PUT").when(op).getMethod();
+ Mockito.doReturn("").when(op).getStorageErrorMessage();
Review Comment:
use empty string constant
> [ABFS] Rename/Create path idempotency client-level resolution
> -------------------------------------------------------------
>
> Key: HADOOP-19450
> URL: https://issues.apache.org/jira/browse/HADOOP-19450
> Project: Hadoop Common
> Issue Type: Task
> Components: fs/azure
> Affects Versions: 3.5.0
> Reporter: Manish Bhatt
> Assignee: Manish Bhatt
> Priority: Major
> Labels: pull-request-available
>
> CreatePath and RenamePath APIs are idempotent as subsequent retries on same
> resource don’t change the server state. However, when client experiences
> connection break on the CreatePath and the RenamePath APIs, client cannot
> make sense if the request is accepted by the server or not.
> On connection failure, the client retries the request. The server might
> return 404 (sourceNotFound) in case of RenamePath API and 409
> (pathAlreadyExists) in case of CreatePath (overwrite=false) API. Now the
> client doesn’t have a path forward. Reason being, in case of CreatePath,
> client doesn’t know if the path was created on the original request or the
> path was already there for some other request, in case of RenamePath, client
> doesn’t know if the source was removed because of the original-try or it was
> not there on the first place.
>
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