TSFenwick commented on code in PR #14131:
URL: https://github.com/apache/druid/pull/14131#discussion_r1172741352
##########
extensions-core/s3-extensions/src/main/java/org/apache/druid/storage/s3/S3DataSegmentKiller.java:
##########
@@ -64,6 +69,52 @@ public S3DataSegmentKiller(
this.inputDataConfig = inputDataConfig;
}
+ @Override
+ public void killBatched(List<DataSegment> segments) throws
SegmentLoadingException
+ {
+ int size = segments.size();
+ if (size == 0) {
+ return;
+ }
+ if (segments.size() == 1) {
+ kill(segments.get(0));
+ return;
+ }
+ try {
+ // we can assume that all segments are in the same bucket.
+ String s3Bucket = MapUtils.getString(segments.get(0).getLoadSpec(),
"bucket");
+ final ServerSideEncryptingAmazonS3 s3Client =
this.s3ClientSupplier.get();
+
+ // 1000 objects is the max amount of objects that can be deleted in s3
at a time.
+ List<List<DataSegment>> segmentsChunks = Lists.partition(segments, 1000);
+ for (List<DataSegment> segmentsChunk : segmentsChunks) {
+ DeleteObjectsRequest deleteObjectsRequest = new
DeleteObjectsRequest(s3Bucket);
+ deleteObjectsRequest = deleteObjectsRequest.withKeys(
+ segmentsChunk.stream()
+ .map(segment ->
MapUtils.getString(segment.getLoadSpec(), "key"))
+ .toArray(String[]::new));
+ DeleteObjectsResult deleteResult =
s3Client.deleteObjects(deleteObjectsRequest);
+ log.info("deleted objects %s", deleteResult);
+
+ // delete descriptors which are a files to store segment metadata in
deep storage.
+ // This file is deprecated and not stored anymore, but we still delete
them if they exist.
+ deleteObjectsRequest = new DeleteObjectsRequest(s3Bucket);
+ deleteObjectsRequest = deleteObjectsRequest.withKeys(
+ segmentsChunk.stream()
+ .map(segment ->
DataSegmentKiller.descriptorPath(MapUtils.getString(
+ segment.getLoadSpec(),
+ "key"
+ )))
+ .toArray(String[]::new));
+ deleteResult = s3Client.deleteObjects(deleteObjectsRequest);
+ log.info("deleted objects %s", deleteResult);
+ }
+ }
+ catch (MultiObjectDeleteException e) {
Review Comment:
what other exceptions can happen here? Is this the best message in the
exception?
https://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/s3/AmazonS3.html#deleteObjects-com.amazonaws.services.s3.model.DeleteObjectsRequest-
https://docs.aws.amazon.com/AmazonS3/latest/API/API_DeleteObjects.html
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