[GitHub] rdblue closed pull request #46: Do not scan manifests with no deletes when expiring snapshots.

[GitBox <gi...@apache.org>]

rdblue closed pull request #46: Do not scan manifests with no deletes when expiring snapshots.
URL: https://github.com/apache/incubator-iceberg/pull/46
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):

diff --git a/core/src/main/java/com/netflix/iceberg/RemoveSnapshots.java b/core/src/main/java/com/netflix/iceberg/RemoveSnapshots.java
index 541cc5f..4784dd1 100644
--- a/core/src/main/java/com/netflix/iceberg/RemoveSnapshots.java
+++ b/core/src/main/java/com/netflix/iceberg/RemoveSnapshots.java
@@ -162,8 +162,11 @@ public void commit() {
         .onFailure((item, exc) ->
             LOG.warn("Failed to get deleted files: this may cause orphaned data files", exc)
         ).run(manifest -> {
-          // even if the manifest is still used, it may contain files that can be deleted
-          // TODO: eliminate manifests with no deletes without scanning
+          if (manifest.deletedFilesCount() != null && manifest.deletedFilesCount() == 0) {
+            return;
+          }
+
+          // the manifest has deletes, scan it to find files to delete
           try (ManifestReader reader = ManifestReader.read(ops.io().newInputFile(manifest.path()))) {
             for (ManifestEntry entry : reader.entries()) {
               // if the snapshot ID of the DELETE entry is no longer valid, the data can be deleted


 

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