abannon commented on code in PR #19009:
URL: https://github.com/apache/druid/pull/19009#discussion_r2796096638
##########
extensions-core/s3-extensions/src/main/java/org/apache/druid/storage/s3/S3DataSegmentKiller.java:
##########
@@ -135,6 +131,40 @@ public void kill(List<DataSegment> segments) throws
SegmentLoadingException
}
}
+ /**
+ * Lists all object keys under the given prefix using pagination. S3 returns
at most 1000 keys per request,
+ * so segment directories with more than 1000 files would previously be only
partially deleted. This method
+ * follows continuation tokens to ensure all objects are listed and can be
removed from deep storage.
+ *
+ * @param s3Client client used to communicate with s3
+ * @param s3Bucket the bucket name
+ * @param prefix the key prefix (e.g. segment path ending with /)
+ * @param maxListingLength maximum keys per list request (e.g. 1000)
+ * @return list of all object keys under the prefix
+ */
+ private List<String> listAllKeysWithPrefix(
Review Comment:
Yes, and actually, it might make sense to reuse even more by calling
S3Utils.deleteObjectsInPath()
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