danielcweeks commented on a change in pull request #22: ExpireSnapshots: do not
commit when no snapshots are expired.
URL: https://github.com/apache/incubator-iceberg/pull/22#discussion_r239538536
##########
File path: core/src/main/java/com/netflix/iceberg/RemoveSnapshots.java
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@@ -115,7 +115,10 @@ public void commit() {
.onlyRetryOn(CommitFailedException.class)
.run(item -> {
TableMetadata updated = internalApply();
- ops.commit(base, updated);
+ // only commit the updated metadata if at least one snapshot was
removed
+ if (updated.snapshots().size() != base.snapshots().size()) {
Review comment:
I think those two checks are functionally equivalent for this check. This
is to effectively check that the number of snapshots has not changed. I would
err on the side of equality as the proposed change would conceptually mean that
you could increase the number of snapshots, which would not be expected in this
case.
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