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https://issues.apache.org/jira/browse/HADOOP-18679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17829847#comment-17829847
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ASF GitHub Bot commented on HADOOP-18679:
-----------------------------------------
steveloughran commented on code in PR #6494:
URL: https://github.com/apache/hadoop/pull/6494#discussion_r1535463621
##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java:
##########
@@ -5457,7 +5421,11 @@ public boolean hasPathCapability(final Path path, final
String capability)
case STORE_CAPABILITY_DIRECTORY_MARKER_AWARE:
return true;
- // multi object delete flag
+ // this is always true, even if multi object
+ // delete is disabled -the page size is simply reduced to 1.
+ case CommonPathCapabilities.BULK_DELETE:
Review Comment:
it means the API is present and some of the semantics "parent dir existence
not guaranteed". For that reason, it will always be faster than before: one
DELETE; no LIST/HEAD etc
> Add API for bulk/paged object deletion
> --------------------------------------
>
> Key: HADOOP-18679
> URL: https://issues.apache.org/jira/browse/HADOOP-18679
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.3.5
> Reporter: Steve Loughran
> Priority: Major
> Labels: pull-request-available
>
> iceberg and hbase could benefit from being able to give a list of individual
> files to delete -files which may be scattered round the bucket for better
> read peformance.
> Add some new optional interface for an object store which allows a caller to
> submit a list of paths to files to delete, where
> the expectation is
> * if a path is a file: delete
> * if a path is a dir, outcome undefined
> For s3 that'd let us build these into DeleteRequest objects, and submit,
> without any probes first.
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