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https://issues.apache.org/jira/browse/HADOOP-18012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17703992#comment-17703992
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ASF GitHub Bot commented on HADOOP-18012:
-----------------------------------------
anmolanmol1234 commented on code in PR #5488:
URL: https://github.com/apache/hadoop/pull/5488#discussion_r1145873654
##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsClient.java:
##########
@@ -105,14 +108,18 @@ public class AbfsClient implements Closeable {
private final ListeningScheduledExecutorService executorService;
- /** logging the rename failure if metadata is in an incomplete state. */
+ private boolean renameResilience;
+
+ /**
+ * logging the rename failure if metadata is in an incomplete state.
+ */
private static final LogExactlyOnce ABFS_METADATA_INCOMPLETE_RENAME_FAILURE =
- new LogExactlyOnce(LOG);
+ new LogExactlyOnce(LOG);
private AbfsClient(final URL baseUrl, final SharedKeyCredentials
sharedKeyCredentials,
- final AbfsConfiguration abfsConfiguration,
- final AbfsClientContext abfsClientContext)
- throws IOException {
+ final AbfsConfiguration abfsConfiguration,
Review Comment:
These spaces will make backporting difficult
> ABFS: Enable config controlled ETag check for Rename idempotency
> ----------------------------------------------------------------
>
> Key: HADOOP-18012
> URL: https://issues.apache.org/jira/browse/HADOOP-18012
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.3.2
> Reporter: Sneha Vijayarajan
> Assignee: Sree Bhattacharyya
> Priority: Major
> Labels: pull-request-available
>
> ABFS driver has a handling for rename idempotency which relies on LMT of the
> destination file to conclude if the rename was successful or not when source
> file is absent and if the rename request had entered retry loop.
> This handling is incorrect as LMT of the destination does not change on
> rename.
> This Jira will track the change to undo the current implementation and add a
> new one where for an incoming rename operation, source file eTag is fetched
> first and then rename is done only if eTag matches for the source file.
> As this is going to be a costly operation given an extra HEAD request is
> added to each rename, this implementation will be guarded over a config and
> can enabled by customers who have workloads that do multiple renames.
> Long term plan to handle rename idempotency without HEAD request is being
> discussed.
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