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https://issues.apache.org/jira/browse/HADOOP-19474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17938585#comment-17938585
]
ASF GitHub Bot commented on HADOOP-19474:
-----------------------------------------
anujmodi2021 commented on code in PR #7421:
URL: https://github.com/apache/hadoop/pull/7421#discussion_r2014014171
##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsDfsClient.java:
##########
@@ -1464,20 +1472,41 @@ public Hashtable<String, String>
getXMSProperties(AbfsHttpOperation result)
/**
* Parse the list file response from DFS ListPath API in Json format
- * @param stream InputStream contains the list results.
- * @throws IOException if parsing fails.
+ * @param result InputStream contains the list results.
+ * @param uri to be used for path conversion.
+ * @return {@link ListResponseData}. containing listing response.
+ * @throws AzureBlobFileSystemException if parsing fails.
*/
@Override
- public ListResultSchema parseListPathResults(final InputStream stream)
throws IOException {
- DfsListResultSchema listResultSchema;
- try {
- final ObjectMapper objectMapper = new ObjectMapper();
- listResultSchema = objectMapper.readValue(stream,
DfsListResultSchema.class);
+ public ListResponseData parseListPathResults(AbfsHttpOperation result, URI
uri) throws AzureBlobFileSystemException {
+ try (InputStream listResultInputStream = result.getListResultStream()) {
+ DfsListResultSchema listResultSchema;
+ try {
+ final ObjectMapper objectMapper = new ObjectMapper();
+ listResultSchema = objectMapper.readValue(listResultInputStream,
+ DfsListResultSchema.class);
+ result.setListResultSchema(listResultSchema);
+ LOG.debug("ListPath listed {} paths with {} as continuation token",
+ listResultSchema.paths().size(),
+ getContinuationFromResponse(result));
+ } catch (IOException ex) {
+ throw new AbfsDriverException(ex);
+ }
+
+ List<FileStatus> fileStatuses = new ArrayList<>();
+ for (DfsListResultEntrySchema entry : listResultSchema.paths()) {
+ fileStatuses.add(getVersionedFileStatusFromEntry(entry, uri));
+ }
+ ListResponseData listResponseData = new ListResponseData();
+ listResponseData.setFileStatusList(fileStatuses);
+ listResponseData.setRenamePendingJsonPaths(null);
+ listResponseData.setContinuationToken(
+ getContinuationFromResponse(result));
+ return listResponseData;
} catch (IOException ex) {
LOG.error("Unable to deserialize list results", ex);
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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